Pick up the correct statement from the following: (A) Excess quantities of iron and manganese in water, cause discolouration of clothes (B) Lead and barium salts have toxic effect (C) Higher copper content affects the lungs (D) All the above

Pick up the correct statement from the following:
(A) Excess quantities of iron and manganese in water, cause discolouration of clothes
(B) Lead and barium salts have toxic effect
(C) Higher copper content affects the lungs
(D) All the above
by

1 Answer

Answer :

(D) All the above
by

Related questions

Pick out the correct statement: (A) Removal of iron from ceramic material is necessitated (by magnetic separation method) so as to avoid discolouration of ceramic products (B) The operating cost of shaking screen is more than that of a vibrating screen (C) Screen capacity does not depend upon the specific gravity of the minerals (D) Asphalt is best crushed using toothed roll crusher

Description : Pick out the correct statement: (A) Removal of iron from ceramic material is necessitated (by magnetic separation method) so as to avoid discolouration of ceramic products (B) The operating cost of ... upon the specific gravity of the minerals (D) Asphalt is best crushed using toothed roll crusher

Last Answer : (A) Removal of iron from ceramic material is necessitated (by magnetic separation method) so as to avoid discolouration of ceramic products

Porphyrin synthesis is inhibited in (A) Mercury poisoning (B) Lead poisoning (C) Manganese poisoning (D) Barium poisoning

Description : Porphyrin synthesis is inhibited in (A) Mercury poisoning (B) Lead poisoning (C) Manganese poisoning (D) Barium poisoning

Last Answer : Answer : B

A student prepares aqueous solutions of the following salts: Copper sulphate, ferrous sulphate, sodium sulphate and barium chloride. Write the color of each solution thus formed?

Description : A student prepares aqueous solutions of the following salts: Copper sulphate, ferrous sulphate, sodium sulphate and barium chloride. Write the color of each solution thus formed?

Last Answer : Answer. Copper sulphate (aq) – blue in color Ferrous sulphate (aq) – pale green in color Sodium sulphate (aq) – colorless Barium chloride (aq) – white in color

Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature (C) Double pipe heat exchangers are mostly used in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Description : Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat ... in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Last Answer : (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature

Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass. (A) Chromium (B) Arsenic (C) Copper (D) Manganese

Description : Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass. (A) Chromium (B) Arsenic (C) Copper (D) Manganese

Last Answer : (C) Copper

Asbestos is formed of : (1) Calcium and Magnesium (2) Copper, Zinc and Manganese (3) Lead and Iron (4) Calcium and Zinc

Description : Asbestos is formed of : (1) Calcium and Magnesium (2) Copper, Zinc and Manganese (3) Lead and Iron (4) Calcium and Zinc

Last Answer : (1) Calcium and Magnesium Explanation: Pure and simple, asbestos is a group of naturally occurring minerals. It is composed of calcium and magnesium silicate. Asbestos occurs as veins in rocks and is mined from the ground, similar to coal.

Asbestos is formed of : (1) Calcium and Magnesium (2) Copper, Zinc and Manganese (3) Lead and Iron (4) Calcium and Zinc

Description : Asbestos is formed of : (1) Calcium and Magnesium (2) Copper, Zinc and Manganese (3) Lead and Iron (4) Calcium and Zinc

Last Answer : Calcium and Magnesium

Pick up the incorrect statement from the following: (A) Iron salts produce heavy flocks and hence remove more suspended matter (B) Iron salts remove hydrogen sulphides (C) Iron salts can be used over a limited range of pH values (D) Iron salts impart corrosiveness to water

Description : Pick up the incorrect statement from the following: (A) Iron salts produce heavy flocks and hence remove more suspended matter (B) Iron salts remove hydrogen sulphides (C) Iron salts can be used over a limited range of pH values (D) Iron salts impart corrosiveness to water

Last Answer : (C) Iron salts can be used over a limited range of pH values

Pick up the correct statement from the following: (A) Copper pipes are highly resistant to acidic and alkaline water (B) Wrought iron pipes are lighter than cast iron pipes (C) Wrought iron pipes corrode quickly and are less durable (D) All the above

Description : Pick up the correct statement from the following:  (A) Copper pipes are highly resistant to acidic and alkaline water  (B) Wrought iron pipes are lighter than cast iron pipes  (C) Wrought iron pipes corrode quickly and are less durable  (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) Higher workability indicates unexpected increase in the moisture content (B) Higher workability indicates deficiency of sand (C) If the concrete mix is dry, the slump is zero (D) All the above

Description : Pick up the correct statement from the following: (A) Higher workability indicates unexpected increase in the moisture content (B) Higher workability indicates deficiency of sand (C) If the concrete mix is dry, the slump is zero (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The precipitation during its travel in atmosphere dissolves certain gases (B) Rain water which percolates through the ground, is free from suspended materials (C) Underground water may dissolve minerals and salts present in the earth's layers (D) All the above

Description : Pick up the correct statement from the following:  (A) The precipitation during its travel in atmosphere dissolves certain gases  (B) Rain water which percolates through the ground, is free from ... water may dissolve minerals and salts present in the earth's layers  (D) All the above 

Last Answer : (D) All the above 

Pick up the correct statement from the following: (A) The incidental expenses of a miscellaneous character which could not be predicted during preparation of the estimate, is called contingencies (B) Additional supervising staff engaged at work site, is called work charged establishment (C) Detailed specifications specify qualities, quantities and the proportions of materials to be used for a particular item (D) All the above

Description : Pick up the correct statement from the following: (A) The incidental expenses of a miscellaneous character which could not be predicted during preparation of the estimate, is called contingencies (B) ... and the proportions of materials to be used for a particular item (D) All the above

Last Answer : (D) All the above

Before X-ray examination (coloured Xray) of the stomach, patients are given suitable salt of barium because. (1) barium is a good absorber of X-rays and helps stomach to appear clearly (2) barium salts are white in colour and this helps stomach to appear clearly (3) barium allows X-rays to pass through the stomach (4) barium salts are easily available

Description : Before X-ray examination (coloured Xray) of the stomach, patients are given suitable salt of barium because. (1) barium is a good absorber of X-rays and helps stomach to appear clearly (2) barium ... clearly (3) barium allows X-rays to pass through the stomach (4) barium salts are easily available

Last Answer : (1) barium is a good absorber of X-rays and helps stomach to appear clearly

Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated sewage in river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above

Description : Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated ... river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above

Last Answer : ANS: D

Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur (C) Lead azide is a popular military explosive (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Description : Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal ... TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Last Answer : (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Pick up the correct statement from the following: (A) Due to boiling, the bacterias present in water can be destroyed (B) Lime may be used for softening hard water (C) Excess lime when added to water, raises the pH value of water (D) All the above

Description : Pick up the correct statement from the following:  (A) Due to boiling, the bacterias present in water can be destroyed  (B) Lime may be used for softening hard water  (C) Excess lime when added to water, raises the pH value of water  (D) All the above 

Last Answer : (D) All the above 

Pick up the correct statement from the following: (A) Insufficient quantity of water makes the concrete mix harsh (B) Insufficient quantity of water makes the concrete unworkable (C) Excess quantity of water makes the concrete segregated (D) All the above

Description : Pick up the correct statement from the following: (A) Insufficient quantity of water makes the concrete mix harsh (B) Insufficient quantity of water makes the concrete unworkable (C) Excess quantity of water makes the concrete segregated (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) The quality of water governs the strength of concrete (B) 10% excess of water reduces the strength of concrete by 15% (C) 30% excess of water reduces the strength of concrete by 50% (D) All the above

Description : Pick up the correct statement from the following: (A) The quality of water governs the strength of concrete (B) 10% excess of water reduces the strength of concrete by 15% (C) 30% excess of water reduces the strength of concrete by 50% (D) All the above

Last Answer : Answer: Option D

0.98 g of the metal sulphate was dissolved in water and excess of barium chloride was added. The precipitated barium sulphate weighted 0.95 g. Calcula

Description : 0.98 g of the metal sulphate was dissolved in water and excess of barium chloride was added. The precipitated barium sulphate weighted 0.95 g. Calcula

Last Answer : 0.98 g of the metal sulphate was dissolved in water and excess of barium chloride was added. ... 95 g. Calculate the equivalent weight of the metal.

Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from the growing medium c. Watering only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Description : Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from ... only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Last Answer : Watering to remove excess soluble salts from the growing medium

Pick up the correct statement from the following: (A) Safety fences are provided on either side of a roadway if embankments are in excess of 6 metres (B) Safety fences are provided on outside of the curves of radii less than 750 m if the embankments are between 3 metres and 6 metres (C) Guard stones are provided at 2.5 metres intervals if embankments are between 1.6 metres to 3 metres (D) All the above

Description : Pick up the correct statement from the following: (A) Safety fences are provided on either side of a roadway if embankments are in excess of 6 metres (B) Safety fences are provided on outside of the ... 2.5 metres intervals if embankments are between 1.6 metres to 3 metres (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) Lime in excess, causes the cement to expand and disintegrate (B) Silica in excess, causes the cement to set slowly (C) Alumina in excess, reduces the strength of the cement (D) All the above

Description : Pick up the correct statement from the following: (A) Lime in excess, causes the cement to expand and disintegrate (B) Silica in excess, causes the cement to set slowly (C) Alumina in excess, reduces the strength of the cement (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The lime in excess makes the cement unsound and causes the cement to expand and disintegrate (B) The silica in excess makes the cement stronger but its setting time also increases (C) The excess amount of alumina weakens the cement (D) All the above

Description : Pick up the correct statement from the following: (A) The lime in excess makes the cement unsound and causes the cement to expand and disintegrate (B) The silica in excess makes the cement stronger ... time also increases (C) The excess amount of alumina weakens the cement (D) All the above

Last Answer : Answer: Option D

Pick out the wrong statement. (A) Use of different catalysts in a reversible catalytic chemical reaction does not change the equilibrium composition (B) Alumina is added as a promoter to iron catalyst in ammonia synthesis reaction (C) Activation energy for a reaction is obtained from the intercept of the Arrhenius plot (D) Presence of inerts affects the equilibrium conversion of reactants in a chemical reaction

Description : Pick out the wrong statement. (A) Use of different catalysts in a reversible catalytic chemical reaction does not change the equilibrium composition (B) Alumina is added as a promoter to ... Arrhenius plot (D) Presence of inerts affects the equilibrium conversion of reactants in a chemical reaction

Last Answer : (C) Activation energy for a reaction is obtained from the intercept of the Arrhenius plot

Brown adipose tissue is characterized by which of the following? (A) Present in large quantities in adult humans (B) Mitochondrial content higher than white adipose tissue (C) Oxidation and phosphorylation are tightly coupled (D) Absent in hibernating animals

Description : Brown adipose tissue is characterized by which of the following? (A) Present in large quantities in adult humans (B) Mitochondrial content higher than white adipose tissue (C) Oxidation and phosphorylation are tightly coupled (D) Absent in hibernating animals

Last Answer : Answer : B

Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following: (A) Alumina (B) Lime (C) Iron-oxide (D) Magnesia

Description : Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following: (A) Alumina (B) Lime (C) Iron-oxide (D) Magnesia

Last Answer : Answer: Option A

Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Description : Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large ... vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Last Answer : (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables

The Vindhyan system of rocks is important for the production of [CDS 2011] (a) precious stones and building materials (b) iron ore and manganese (c) bauxite and mica (d) copper and uranium

Description : The Vindhyan system of rocks is important for the production of [CDS 2011] (a) precious stones and building materials (b) iron ore and manganese (c) bauxite and mica (d) copper and uranium

Last Answer : Ans: (a)

In hoemochromatosis, the liver is infiltrated with (A) Copper (B) Iron (C) Manganese (D) Chromium

Description : In hoemochromatosis, the liver is infiltrated with (A) Copper (B) Iron (C) Manganese (D) Chromium

Last Answer : Answer : B

Menke’s disease is due to an abnormality in the metabolism of (A) Iron (B) Manganese (C) Magnesium (D) Copper

Description : Menke’s disease is due to an abnormality in the metabolism of (A) Iron (B) Manganese (C) Magnesium (D) Copper

Last Answer : Answer : D

In West Bengal, Raniganj is associated with : (1) Coalfields (2) Iron ore (3) Manganese ore (4) Copper

Description : In West Bengal, Raniganj is associated with : (1) Coalfields (2) Iron ore (3) Manganese ore (4) Copper

Last Answer : (1) Coalfields Explanation: Raniganj Coalfield is primarily located in the Asansol and Durgapur subdivisions of Bardhaman district in the Indian state of West Bengal.

Which one of the following minerals is found in pure form? (1) Iron (2) Copper (3) Bauxite (4) Manganese

Description : Which one of the following minerals is found in pure form? (1) Iron (2) Copper (3) Bauxite (4) Manganese

Last Answer : (2) Copper Explanation: Copper is one of very few elements that are found in essentially pure form in nature. But the bulk of the copper resource is found in other minerals.

Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys. (A) Beryllium (B) Manganese (C) Copper (D) Iron

Description : Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys. (A) Beryllium (B) Manganese (C) Copper (D) Iron

Last Answer : (B) Manganese

Which micro-nutrient is most deficient in Indo-Gangatic alluvium soils? (a) Iron (b) Zinc (c) Copper (d) Manganese

Description : Which micro-nutrient is most deficient in Indo-Gangatic alluvium soils? (a) Iron (b) Zinc (c) Copper (d) Manganese

Last Answer : (d) Manganese

Minerals known to be required in large amounts for plant growth include (a) potassium, phosphorus, selenium, boron (b) magnesium, sulphur, iron, zinc (c) phosphorus, potassium, sulphur, calcium (d) calcium, magnesium, manganese, copper.

Description : Minerals known to be required in large amounts for plant growth include (a) potassium, phosphorus, selenium, boron (b) magnesium, sulphur, iron, zinc (c) phosphorus, potassium, sulphur, calcium (d) calcium, magnesium, manganese, copper.

Last Answer : (c) phosphorus, potassium, sulphur, calcium

In which of the following all three are macronutrients? (a) Molybdenum, magnesium, manganese (b) Nitrogen, nickel, phosphorus (c) Boron, zinc, manganese (d) Iron, copper, molybdenum

Description : In which of the following all three are macronutrients? (a) Molybdenum, magnesium, manganese (b) Nitrogen, nickel, phosphorus (c) Boron, zinc, manganese (d) Iron, copper, molybdenum

Last Answer : (d) Iron, copper, molybdenum

Explain the effects of following chemical elements on iron. i) Copper ii) Phosphorus iii) Manganese

Description : Explain the effects of following chemical elements on iron. i) Copper ii) Phosphorus iii) Manganese

Last Answer : Effect on iron:  i) Copper: it improves the resistance to atmospheric corrosion. It strengthens steel. It may be added to improve formability. It improves pains adhesion  ii) ... Manganese:it increase tensile strength, abrasion resistance, hardenability and toughness . it decrease weldability. 

Which one of the following minerals is found in pure form? (1) Iron (2) Copper (3) Bauxite (4) Manganese

Description : Which one of the following minerals is found in pure form? (1) Iron (2) Copper (3) Bauxite (4) Manganese

Last Answer : Copper

. Presence of iron and manganese in water causes (A) Reduction in its dissolved oxygen content (B) Discoloration of bathroom fixtures (C) Temporary hardness (D) None of these

Description : . Presence of iron and manganese in water causes (A) Reduction in its dissolved oxygen content (B) Discoloration of bathroom fixtures (C) Temporary hardness (D) None of these

Last Answer : (B) Discoloration of bathroom fixtures

Manganese in steel affects its (A) Ductility (B) Tensile strength (C) Hardness (D) None of these

Description : Manganese in steel affects its (A) Ductility (B) Tensile strength (C) Hardness (D) None of these

Last Answer : (B) Tensile strength

The wire of flash bulb is made of : (1) Copper (2) Barium (3) Magnesium (4) Silver

Description : The wire of flash bulb is made of : (1) Copper (2) Barium (3) Magnesium (4) Silver

Last Answer : Magnesium

Pick up the correct statement from the following: (A) A maximum value of dry density is obtained at optimum water content (B) At low value of water content most soils tend to be stiff (C) At high water content, the dry density decreases with an increase of water content (D) All the above

Description : Pick up the correct statement from the following: (A) A maximum value of dry density is obtained at optimum water content (B) At low value of water content most soils tend to be stiff (C) At high water content, the dry density decreases with an increase of water content (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) In soils, the flow index indicates variation in shear strength with water content (B) Liquid limit minus plastic limit, is known as plasticity index of the soil (C) Plastic limit minus shrinkage limit, is known as shrinkage index of the soil (D) All the above

Description : Pick up the correct statement from the following: (A) In soils, the flow index indicates variation in shear strength with water content (B) Liquid limit minus plastic limit, is known as plasticity ... Plastic limit minus shrinkage limit, is known as shrinkage index of the soil (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The range of water content between the liquid limit and plastic limit is called plasticity index (B) The ratio of the liquid limit minus the natural water content to the plasticity index of soils, is called consistency index (C) The ratio of natural water content minus its plastic limit to its plasticity index is called liquidity index (D) All the above

Description : Pick up the correct statement from the following: (A) The range of water content between the liquid limit and plastic limit is called plasticity index (B) The ratio of the liquid limit minus ... content minus its plastic limit to its plasticity index is called liquidity index (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus (C) Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils (D) All the above

Description : Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs ... be compacted to a very high density as compared to fine grained soils (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The portion of pellicular water which remains unutilised, is called hygroscopic water (B) The moisture content at which permanent wilting of plants takes place, is called the wilting point (C) The moisture deficiency will be different at different points (D) All the above

Description : Pick up the correct statement from the following: (A) The portion of pellicular water which remains unutilised, is called hygroscopic water (B) The moisture content at which permanent wilting of plants ... point (C) The moisture deficiency will be different at different points (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the concrete (C) The slump of the concrete mix decreases due to an increase in temperature (D) All the above

Description : Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the ... The slump of the concrete mix decreases due to an increase in temperature (D) All the above

Last Answer : Answer: Option D

Choose the correct statement about severity of side effects to oral iron medication: A. Ferrous salts are better tolerated than ferric salts B. Complex organic salts of iron are better tolerated than inorganic salts C. Liquid preparations of iron are better tolerated than tablets D. Tolerability depends on the quantity of elemental iron in the medication

Description : Choose the correct statement about severity of side effects to oral iron medication: A. Ferrous salts are better tolerated than ferric salts B. Complex organic salts of iron are better ... better tolerated than tablets D. Tolerability depends on the quantity of elemental iron in the medication

Last Answer : D. Tolerability depends on the quantity of elemental iron in the medication

Pick up the correct statement from the following: (A) The rise of the ground surface due to frost action is called frost heave (B) The freezing of water is accompanied by a volume increase of 9% (C) Below freezing point, higher soil suction develops (D) All the above

Description : Pick up the correct statement from the following: (A) The rise of the ground surface due to frost action is called frost heave (B) The freezing of water is accompanied by a volume increase of 9% (C) Below freezing point, higher soil suction develops (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) If ground water enters the channel, the channel is known as effluent channel (B) If water goes out of channel to meet ground water, the channel is said to be influent stream (C) If the water table is at higher level than the water level in channel, ground water flows to the stream (D) All the above

Description : Pick up the correct statement from the following: (A) If ground water enters the channel, the channel is known as effluent channel (B) If water goes out of channel to meet ground water, the channel ... level than the water level in channel, ground water flows to the stream (D) All the above

Last Answer : Answer: Option D