Description : The minimum TSS content in RTS beverage is — % a. 10 b. 20 c. 30 d. 40
Last Answer : a. 10
Description : In mixed farming at least — % gross income contributed by livestocks. a. 10 b. 20 c. 30 d. 40
Description : In the American standard, the aural transmitter maximum radiated power is _____ of peak visual transmitter power. A. 10 % B. 30 % C. 20 % D. 40 %
Last Answer : C. 20 %
Description : In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by (A) 10 % (B) 20 % (C) 30 % (D) 40 %
Last Answer : (D) 40 %
Description : The normal consistency of ordinary Portland cement is about (A) 10 % (B) 20 % (C) 30 % (D) 40 %
Last Answer : Answer: Option C
Description : What is the % of H2O in Fe(CNS)3⋅3H2O [CPMT 1981] (A) 45 (B) 30 (C) 19 (D) 25
Last Answer : (C) 19
Description : The acidic aqueous solution of ferrous ion forms a brown complex in the presence of `NO_(3)^(Θ)` by the follwing two steps: `[Fe(H_(2)O)_(6)]^(2+) +NO
Last Answer : The acidic aqueous solution of ferrous ion forms a brown complex in the presence of `NO_(3)^(Θ)` ... + H_(2)O` Complete and balance the equations .
Description : The total domestic consumption in a city water supply, is assumed (A) 20 % (B) 30 % (C) 40 % (D) 60 %
Last Answer : (D) 60 %
Description : List any two observations when Ferrous Sulphate is heated in a dry test tube? -Science
Last Answer : Two Observations Are: 1) Change in colour of crystals from green to white. 2) Evolution of gas. The gases evolved are SO2 and SO3.
Description : What is the colour of ferrous sulphate crystals? How does this colour change after heating? -Chemistry
Last Answer : Answer.The colour of ferrous sulphate is pale green. The colour changes to reddish brown on heating due to formation of iron (III) oxide. Give an example each for ... reactions. Write relevant balanced chemical equations also. Thermal decomposition reaction: Photochemical decomposition reaction:
Description : 2g of ferrous sulphate crystals are heated in a dry boiling tube. (i) List any two observations. (ii) Name the type of chemical reaction taking place. (iii) ‘Write the chemical equation for the reaction. -Chemistry
Last Answer : Answer. (i) •Green colour of Fe SO4 disappears and reddish brown solid is formed. • Smell of burning sulphur. (ii) Decomposition reaction
Description : In the titration of `K_(2)Cr_(2)O_(7)` and ferrous sulphate, following data is obtained: `V_(1)` mL of `K_(2)Cr_(2)O_(7)` solution of molarity `M_(1)`
Last Answer : In the titration of `K_(2)Cr_(2)O_(7)` and ferrous sulphate, following data is obtained: `V_(1)` mL of `K_(2)Cr_ ... V_(2)` D. `M_(1)V_(1)=M_(2)V_(2)`
Description : Ferrous sulphate is used in water treatment as a/an - (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent
Last Answer : (3) Coagulant aid
Description : Aluminium storage vessel can be used to store (A) Aqua regia (B) Ferrous sulphate (C) Hydrochloric acid (10%) (D) None of these
Last Answer : (D) None of these
Description : Concrete tank can be used to store (A) Alum (B) Ferrous sulphate (C) Sulphuric acid (D) Saturated brine
Last Answer : (D) Saturated brine
Description : An aluminium strip is kept immersed in a freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that a) Green solution slowly turns brown b) Lower end of the test ... c)A colourless gas with smell of burning sulphur is evolved c)Light green solution changes to blue
Last Answer : a) Green solution slowly turns brown
Description : Which among the following changes are endothermic in nature (a) decomposition of ferrous sulphate (b) dissolution of ammonium chloride in water (c) both (a) and (b) (d) dilution of hydrochloric acid
Last Answer : (c) both (a) and (b)
Description : __________ is not a fertiliser. (A) Calcium ammonium nitrate (B) Ferrous sulphate (C) Liquid ammonia (D) Ammonium sulphate
Last Answer : (B) Ferrous sulphate
Description : Pick out the one which is not a chemical coagulant. (A) Aluminium sulphate (B) Ferrous sulphate (C) Hydrated lime (D) Chloramine
Last Answer : (D) Chloramine
Description : Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by (A) Biological oxygen pond (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) (C) Lagoons (D) Filtration
Last Answer : (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)
Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine
Last Answer : (B) Alum
Description : Blue vitriol is chemically (A) Copper sulphate (B) Ferrous sulphate (C) Copper nitrate (D) Aluminium sulphate
Last Answer : (A) Copper sulphate
Description : Which of the following is used as a coagulant in water treatment? (A) Chloramine (B) Chlorine (C) Ferrous sulphate (D) Hydrogen peroxide
Last Answer : (C) Ferrous sulphate
Description : Which of the following is an yellow pigment? (A) Titanium dioxide (B) Ferrous sulphate (C) Lead chromates (D) Zinc sulphides
Last Answer : (C) Lead chromates
Description : Alum is chemically (A) Copper sulphate (B) Aluminium sulphate (C) Ferrous sulphate (D) Ferric sulphate
Last Answer : (B) Aluminium sulphate
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
Description : Write two precautions that must be taken while studying the decomposition reaction, when the ferrous sulphate crystals are heated in a boiling tube?
Last Answer : Answer. Keep your nose away from the gas like SO2 which is suffocative. Use tube holder to heat the test tube.
Description : Saw dust can be rendered chemically inert by boiling it in water containing (A) Ferrous sulphate (B) Potassium chloride (C) Ammonia (D) Nitric acid
Last Answer : Answer: Option A
Description : Ferrous sulphate is used in water treatment as a/an (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent
Last Answer : Coagulant aid
Description : In gram nipping is done at — DAS a. 10 to 20 b. 5 to 10 c. 30 to 40 d. 50 to 60
Last Answer : c. 30 to 40
Description : In potato cultivation what should be the ideal distance between plantation of two tubers? a. 30 – 35 cm b. 05 – 10 cm c. 35 – 40 cm d. 15 – 20 cm
Last Answer : d. 15 – 20 cm
Description : The soil contains —- % organic matter a. 25 b. 58 c. 5 d. 65
Last Answer : c. 5
Description : To be designated as Clay soil, A soil must contain at least — % clay separates. a. 40 b. 15 c. 35 d. 75
Last Answer : c. 35
Description : The sulphate of a metal M contains 9.87% of M. This sulphate is isomorphous with ZnSO4.7H2O. The atomic weight of M is [IIT 1991] (A) 40.3 (B) 36.3 (C) 24.3 (D) 11.3
Last Answer : (C) 24.3
Description : Pest which causes damage more than — % in the field is called as major pest. a. 5 b. 15 c. 10 d. 20
Last Answer : c. 10
Description : In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of (A) 1.5 (B) -0.6 (C) -1.5 (D) 0.6
Last Answer : (C) -1.5
Description : A raft foundation is provided if its area exceeds the plan area of the building by (A) 10 % (B) 20 % (C) 40 % (D) 50 %
Last Answer : Answer: Option D
Description : What is the ideal temperature range for fish farming a. Less than 15 oC b. 20-30 oC c. 30-40 oC d. 15-20 Oc
Last Answer : b. 20-30 oC
Description : Seed rate of lentil crop is —kg/ha a. 12 to 15 b. 20 to 25 c. 30 to 40 d. 45 to 50
Description : Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %
Last Answer : (A) 30 %
Description : The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %
Last Answer : (C) 50 %
Description : Clay and silt content in a good brick earth must be at least (A) 50 % (B) 40 % (C) 30 % (D) 25 %
Description : Mechanical and Electrical sources increased from - A) 40 to 83 % C) 30 to 93 % B) 35 to 87 % D) None of the above
Last Answer : 40 to 83 %
Description : In an all weld tensile test, the original specimen gauge length was 50mm, and after the test the increased gauge length was 65mm, what is the elongation percentage? a) % A is 40 b) % A is 60 c) % A is 30 d) % A is 36
Last Answer : c) % A is 30
Description : Brass is an alloy of copper and zinc having the relative percentage (A) 60-70% Cu and 30-40% Zn (B) 50-60% Cu and 40-50% Zn (C) 40-50 % Cu and 60-50% Zn (D) 30-40 % Cu and 60-70% Zn
Last Answer : A) 60-70% Cu and 30-40% Zn
Description : The ratio between the number of boys and girls in a school is 4:5. If the number of boys are increased by 30 % and the number of girls increased by 40 %, then what will the new ratio of boys and girls in the school. A) 13/35 B) 26/35 C) 26/41 D) 23/13 E) None of these
Last Answer : Answer: B boys = 4x and girls = 5x. Required ratio = [(130/100)*4x]/ [(140/100)*5x] 26/35
Description : The maximum allowable Los Angeles abrasion value for high quality surface course is (A) 10 % (B) 20 % (C) 30 % (D) 45 %
Description : The percentage of alumina in a good brick earth lies between (A) 5 to 10 % (B) 20 to 30 % (C) 50 to 60 % (D) 70 to 80 %
Last Answer : Answer: Option B
Description : Percentage of silica in a good brick earth lies between (A) 5 to 10 % (B) 20 to 30 % (C) 50 to 60 % (D) 70 to 80
Description : Total mechanical losses ( frictional losses , pumping loss in intake and exhaust and power accessories) will amount to a.10-20 % ihp b.2-10 % ihp c.20-30 % ihp d.30 -50 % ihp
Last Answer : a.10-20 % ihp