Which of the following is an absorbent? A.silica gel B. activated alumina C. both of the mentioned D. none of the mentioned

Which of the following is an absorbent? A.silica gel B. activated alumina C. both of the mentioned D. none of the mentioned  
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ANSWER  : C
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Which of the following is commonly used as liquid absorbent?  a. Silica gel  b. Activated alumina  c. Ethylene glycol  d. None of these

Description : Which of the following is commonly used as liquid absorbent?  a. Silica gel  b. Activated alumina  c. Ethylene glycol  d. None of these

Last Answer : Ethylene glycol

Which of the following adsorbent is used to decolourise yellow glycerine? (A) Silica gel (B) Alumina (C) Fuller's earth (D) Activated carbon

Description : Which of the following adsorbent is used to decolourise yellow glycerine? (A) Silica gel (B) Alumina (C) Fuller's earth (D) Activated carbon

Last Answer : (D) Activated carbon

When air passes through silica gel, A. it absorbs water vapour molecules B. latent heat of condensation is released C.dbt of air increases D. all of the mentioned

Description : When air passes through silica gel, A. it absorbs water vapour molecules B. latent heat of condensation is released C.dbt of air increases D. all of the mentioned

Last Answer : ANSWER : D

Catalyst used in the catalytic cracking is (A) Silica-alumina (B) Silica gel (C) Vanadium pentoxide (D) Nickel

Description : Catalyst used in the catalytic cracking is (A) Silica-alumina (B) Silica gel (C) Vanadium pentoxide (D) Nickel

Last Answer : (A) Silica-alumina

Catalyst used in alkylation process is (A) Sulphuric acid (B) Nickel (C) Silica gel (D) Alumina

Description : Catalyst used in alkylation process is (A) Sulphuric acid (B) Nickel (C) Silica gel (D) Alumina

Last Answer : (A) Sulphuric acid

The catalyst used in shift converter is (A) Nickel (B) Vanadium (C) Silica gel (D) Alumina

Description : The catalyst used in shift converter is (A) Nickel (B) Vanadium (C) Silica gel (D) Alumina

Last Answer : (A) Nickel

Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon

Description : Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon

Last Answer : (B) Limestone powder or alkalised alumina

The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is (A) Alumina (B) Silica gel(C) Platinum(D) Nickel

Description : The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is (A) Alumina (B) Silica gel (C) Platinum (D) Nickel

Last Answer : (A) Alumina

The catalyst used in shift converter is (A) Nickel (B) Vanadium (C) Silica gel (D) Alumina

Description : The catalyst used in shift converter is (A) Nickel (B) Vanadium (C) Silica gel (D) Alumina

Last Answer : (A) Nickel

Which of the following adsorbent is used in the refining of sugar? (A) Bone charcoal (B) Wood charcoal (C) Silica gel (D) Activated clay

Description : Which of the following adsorbent is used in the refining of sugar? (A) Bone charcoal (B) Wood charcoal (C) Silica gel (D) Activated clay

Last Answer : (A) Bone charcoal

Cooling towers are rated in terms of A. approach B. range C. both of the mentioned D. none of the mentioned

Description : Cooling towers are rated in terms of A. approach B. range C. both of the mentioned D. none of the mentioned

Last Answer : ANSWER :C

Heating and humidification is done in A. summer air conditioning B. winter air conditioning C. both of the mentioned D. none of the mentioned

Description : Heating and humidification is done in A. summer air conditioning B. winter air conditioning C. both of the mentioned D. none of the mentioned

Last Answer : ANSWER : B

In sensible heating or cooling, A. work done remains constant B. dry bulb temperature or air remains constant C. both of the mentioned D. none of the mentioned

Description : In sensible heating or cooling, A. work done remains constant B. dry bulb temperature or air remains constant C. both of the mentioned D. none of the mentioned

Last Answer : ANSWER : A

The solidifying agent commonly used in preparation of media is/are A-agar B-silica gel C-both (a) and (b) D-none of these

Description : The solidifying agent commonly used in preparation of media is/are A-agar B-silica gel C-both (a) and (b) D-none of these

Last Answer : both (a) and (b)

Quartz is a crystalline form of - (1) Alumina (2) Glass (3) Silica (4) Limestone

Description : Quartz is a crystalline form of - (1) Alumina (2) Glass (3) Silica (4) Limestone

Last Answer : (3) Silica Explanation: Quartz is made up of a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. Tridymite ... is a denser polymorph of quartz found in some meteorite impact sites and in metamorphic rocks.

Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process (C) The most ideal feedstock for thermal reforming is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Description : Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming ... is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Last Answer : (C) The most ideal feedstock for thermal reforming is dearomatised kerosene

. Which of the following is used as a catalyst in fluidised bed catalytic cracking? (A) Silica-magnesia (B) Silica-alumina (C) Bentonite clays (D) All (A), (B) and (C

Description : . Which of the following is used as a catalyst in fluidised bed catalytic cracking? (A) Silica-magnesia (B) Silica-alumina (C) Bentonite clays (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

Rotary kilns in cement industry are lined with _________bricks. (A) Fireclay (B) Silica (C) Lead (D) High alumina & high magnesia

Description : Rotary kilns in cement industry are lined with _________bricks. (A) Fireclay (B) Silica (C) Lead (D) High alumina & high magnesia

Last Answer : (D) High alumina & high magnesia

Molecular sieves are porous (A) Alumina (B) Silica (C) Synthetic zeolites crystals/metal alumino-silicates (D) None of these

Description : Molecular sieves are porous (A) Alumina (B) Silica (C) Synthetic zeolites crystals/metal alumino-silicates (D) None of these

Last Answer : (C) Synthetic zeolites crystals/metal alumino-silicates

Scale formation in boiler is controlled by (A) Preheating of feed water (B) Reduction in hardness, silica & alumina in feed water (C) Keeping the pH value of feed water just below 7 (D) Eliminating H2S in feed water

Description : Scale formation in boiler is controlled by (A) Preheating of feed water (B) Reduction in hardness, silica & alumina in feed water (C) Keeping the pH value of feed water just below 7 (D) Eliminating H2S in feed water

Last Answer : (B) Reduction in hardness, silica & alumina in feed water

The major constituents of glass are (A) Lime, clay and soda ash (B) Sand, lime and soda ash (C) Silica, alumina and clay (D) Silica, alumina and soda ash

Description : The major constituents of glass are (A) Lime, clay and soda ash (B) Sand, lime and soda ash (C) Silica, alumina and clay (D) Silica, alumina and soda ash

Last Answer : (B) Sand, lime and soda ash

The catalyst used in the manufacture of DDT is (A) Alumina (B) Silica (C) 20% oleum (D) Aluminium chloride

Description : The catalyst used in the manufacture of DDT is (A) Alumina (B) Silica (C) 20% oleum (D) Aluminium chloride

Last Answer : (C) 20% oleum

Major component of flint glass is (A) Lead oxide (B) Silica (C) Alumina (D) Soda

Description : Major component of flint glass is (A) Lead oxide (B) Silica (C) Alumina (D) Soda

Last Answer : (A) Lead oxide

The refractory lining of the bottom in a basic electric arc furnace is made of (A) Silica (B) Alumina (C) Magnesia (D) Fireclay

Description : The refractory lining of the bottom in a basic electric arc furnace is made of (A) Silica (B) Alumina (C) Magnesia (D) Fireclay

Last Answer : Option C

Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is (A) 5CaO. 3 Al2O3 (B) 3CaO. Al2O3 (C) 3CaO. SiO2 (D) 2CaO. SiO2

Description : Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is (A) 5CaO. 3 Al2O3 (B) 3CaO. Al2O3 (C) 3CaO. SiO2 (D) 2CaO. SiO2

Last Answer : Option A

Efflorescence in cement is caused due to an excess of (A) Alumina (B) Iron oxide (C) Silica (D) Alkalis

Description : Efflorescence in cement is caused due to an excess of (A) Alumina (B) Iron oxide (C) Silica (D) Alkalis

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 proportions of chemical ingredients of cement (A) Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3 (B) Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3 (C) Alumina : Silica : Lime : Iron oxide : 63 : 22 : 6 : 3 (D) Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3

Description : Pick up the correct proportions of chemical ingredients of cement (A) Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3 (B) Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3 (C) Alumina : Silica : ... oxide : 63 : 22 : 6 : 3 (D) Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3

Last Answer : Answer: Option A

The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is (A) 20 (B) 15 (C) 5 (D) 0

Description : The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is (A) 20 (B) 15 (C) 5 (D) 0

Last Answer : Answer: Option D

The main ingredient of a good quality brick earth, is (A) Magnesia (B) Lime (C) Silica (D) Alumina

Description : The main ingredient of a good quality brick earth, is (A) Magnesia (B) Lime (C) Silica (D) Alumina

Last Answer : Answer: Option D

The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All the above

Description : The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All the above

Last Answer : Answer: Option D

The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All these

Description : The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All these

Last Answer : Answer: Option D

A good brick earth should contain: (A) About 20% to 30% of alumina (B) About 50% to 60% of silica (C) Not more than 5% of lime (D) All the above

Description : A good brick earth should contain: (A) About 20% to 30% of alumina (B) About 50% to 60% of silica (C) Not more than 5% of lime (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

The percentage of alumina and silica in good fire clay vary respectively is (A) 25, 75 (B) 30, 70 (C) 35, 65 (D) All of these

Description : The percentage of alumina and silica in good fire clay vary respectively is (A) 25, 75 (B) 30, 70 (C) 35, 65 (D) All of these

Last Answer : Answer: Option A

The main ingredients of Portland cement are (A) Lime and silica (B) Lime and alumina (C) Silica and alumina (D) Lime and iron

Description : The main ingredients of Portland cement are (A) Lime and silica (B) Lime and alumina (C) Silica and alumina (D) Lime and iron

Last Answer : Answer: Option A

Which of the following ingredients of the brick earth enables the brick to retain its shape? (A) Alumina (B) Silica (C) Iron (D) Magnesia

Description : Which of the following ingredients of the brick earth enables the brick to retain its shape? (A) Alumina (B) Silica (C) Iron (D) Magnesia

Last Answer : Answer: Option B

Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth? (A) Lime stone and alumina (B) Silica and alkalies (C) Alumina and iron (D) Alkalies and magnesium

Description : Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth? (A) Lime stone and alumina (B) Silica and alkalies (C) Alumina and iron (D) Alkalies and magnesium

Last Answer : Answer: Option B

Slate (A) Is a metamorphic rock (B) Splits into thin sheets along its bedding planes (C) Has a smooth surface and contains alumina and silica (D) Possesses good water absorption capacity

Description : Slate (A) Is a metamorphic rock (B) Splits into thin sheets along its bedding planes (C) Has a smooth surface and contains alumina and silica (D) Possesses good water absorption capacity

Last Answer : Answer: Option A

Which of the following ingredient of cement when added in excess quantity, causes the cement to set slowly. (a) Lime (b) Silica (c) Alumina (d) Iron oxide

Description : Which of the following ingredient of cement when added in excess quantity, causes the cement to set slowly. (a) Lime (b) Silica (c) Alumina (d) Iron oxide

Last Answer : Lime is a common ingredient in cement. It is typically added in small amounts to help the cement set more quickly. Adding too much lime can cause the cement to set slowly. Alumina, silica, and iron oxide are also common ingredients in cement, but they do not have an effect on the setting time.

The proportion of lime, silica, alumina and iron oxide in a Portland cement is (a) 63:22:6:3 (b) 63:22:3:6 (c) 22:63:6:3 (d) All the above

Description : The proportion of lime, silica, alumina and iron oxide in a Portland cement is (a) 63:22:6:3 (b) 63:22:3:6 (c) 22:63:6:3 (d) All the above

Last Answer : (a) 63:22:6:3

The maximum percentage of chemical ingredient of cement is (a) Alumina (b) Iron oxide (c) Lime (d) Silica

Description : The maximum percentage of chemical ingredient of cement is (a) Alumina (b) Iron oxide (c) Lime (d) Silica

Last Answer : (c) Lime

Efflorescence in cement is caused due to an excess of [ A ] Alkalies [ B ] Silica [ C ] Iron oxide [ D ] Alumina

Description : Efflorescence in cement is caused due to an excess of [ A ] Alkalies [ B ] Silica [ C ] Iron oxide [ D ] Alumina

Last Answer : [ A ] Alkalies

White cement contains less amount of ___________ [ A ] Lime [ B ] Silica [ C ] Alumina [ D ] Iron oxide

Description : White cement contains less amount of ___________ [ A ] Lime [ B ] Silica [ C ] Alumina [ D ] Iron oxide

Last Answer : [ D ] Iron oxide

Which of the following constituents impart plasticity to brick earth a) Alumina* b) Silica c) Lime d) Magnesia

Description : Which of the following constituents impart plasticity to brick earth a) Alumina* b) Silica c) Lime d) Magnesia

Last Answer : a) Alumina*

The main ingredients of Portland cement are a) Lime and silica* b) Lime and Alumina c) Alumina magnesia d) Silica and Alumina

Description : The main ingredients of Portland cement are a) Lime and silica* b) Lime and Alumina c) Alumina magnesia d) Silica and Alumina

Last Answer : a) Lime and silica*

Which of the following ingredients of Brick earth enables the brick to retain its shape a) Alumina b) Silica* c) Iron d) Magnesia

Description : Which of the following ingredients of Brick earth enables the brick to retain its shape a) Alumina b) Silica* c) Iron d) Magnesia

Last Answer : b) Silica*

Quartz is a crystalline form of (1) Alumina (2) Glass (3) Silica (4) Limestone

Description : Quartz is a crystalline form of (1) Alumina (2) Glass (3) Silica (4) Limestone

Last Answer : Silica

Frequently employed materials for the adsorption chromatography of proteins include (A) High capacity supporting gel (B) Starch blocks (C) Calcium phosphate gel alumina gel and hydroxy apatite (D) All of these

Description : Frequently employed materials for the adsorption chromatography of proteins include (A) High capacity supporting gel (B) Starch blocks (C) Calcium phosphate gel alumina gel and hydroxy apatite (D) All of these

Last Answer : Answer : C

Consider the following statements. The following factors relate to the process of coagulation : 1. Percentage removal is higher when turbidity is more 2. Additional of activated silica aids in the process of coagulation 3. pH of water is an important consideration for selecting a coagulant Which of the following statements are correct ? a) 1, 2 and 3 b) 1 and 2 only c) 2 and 3 only d) 1 and 3 only

Description : Consider the following statements. The following factors relate to the process of coagulation : 1. Percentage removal is higher when turbidity is more 2. Additional of activated silica aids in the process of coagulation 3. pH of water ... 1, 2 and 3 b) 1 and 2 only c) 2 and 3 only d) 1 and 3 only

Last Answer : a) 1, 2 and 3