1. Which one of the following colors is supplied by Sodium Chromate?
a) Blue
c) Red
c) Green
d) Black
Answer. c) Red;
.
2. Select the correct answer using the given code:
List I List II
A. Acetone 1. Fire retardant
B. Carbon tetra chloride 2. Nail Polish
C. Hydrogen Peroxide 3. Bandage of Wounds
D. Fluid Ammonia 4. Refrigerator
Code:
A B C D
a) 4 3 2 1
b) 3 4 1 2
c) 2 1 3 4
d) 1 3 4 2
Answer. c) 2 1 3 4;
.
3. Which one of the following is used for manufacturing safety matches?
a) Di phosphorus
b) Black Phosphorus
c) Red Phosphorous
d) Scarlet Phosphorus
Answer. c) Red Phosphorous;
.
4. When kept in air and darkness, which of the following elements glows spontaneously?
a) Red phosphorus
b) White Phosphorus
c) Scarlet phosphorus
d) Violet phosphorus
Answer. b) White Phosphorus;
.
5. Which one of the following solutions of electrolytes is used in the car battery?
a) Sodium Sulfate
b) Nitric Acid
c) Sulfuric Acid
d) Potassium nitrate
Answer. c) Sulfuric Acid;
.
6. Aquarazia used by goldsmiths is made by combining the following
a) Nitric acid and sulfuric acid
b) Nitric acid and hydrochloric acid
c) Sulfuric acid and hydrochloric acid
d) Citric acid and benzoic acid
Answer. b) Nitric acid and hydrochloric acid;
.
7. Which of the following preservatives is used for colored juices? ( UPPSC PYQ)
a) Sodium Benzoate
b) Potassium metabisulphite
c) Vinegar
d) Potassium Benzoate
Answer. a) Sodium Benzoate;
.
8. Which one of the following substances is used in photography and also as an antichlor?
a) Chrome red
b) Sodium thiosulphate
c) Hydrogen Peroxide
d) Calomel
Answer. b) Sodium thiosulphate;
.
9. The chemical used as a fixer in the photography is
a) Sodium thiosulphate
b) Borax
c) Sodium tetrathionate
d) Ammonium Molybdate
Answer. a) Sodium thiosulphate;
10. The hypo solution used in photography is an aqueous solution of
a) Sodium thiosulphate
b) Sodium Tetrathionate
c) Sodium Sulphate
d) Ammonium persulfate
Answer. a) Sodium thiosulphate
11. The useful elements in Photography are
a) Silver nitrate
b) Silver Bromide
c) Sulfuric acid
d) Citric Acid
Answer. b) Silver Bromide
12. Which of the following is coated on the photographic plate?
a) Silver Oxide
b) Silver bromide
c) Silver Chloride
d) Silver Iodide
Answer. b) Silver bromide
13. Which one of the following chemicals helps in fruit ripening
a) Ethephon
b) Astrazine
c) Isoproturan
d) Malathion
Answer. a) Ethephon;
.
14. Which of the following chemicals is used for ripening?
a) Sodium Chloride
b) Calcium Carbide
c) Potassium Chloride
d) None of the above
Answer. b) Calcium Carbide
15. Fruit ripening is promoted by which of the following?
a) Carbon dioxide
b) Sulphur dioxide
c) Nitrogen
d) Ethylene
Answer. d) Ethylene
16. Which one of the following pairs is not correctly matched?
a) Fullerenes -- Fluorinated Organic compounds
b) Dry Ice: Solid Carbon Dioxide
c) Kirotin: a protein known as the outer layer of human skin
d) Mustard gas: toxic fluid used in chemical warfare
Answer. a) Fullerenes -- Fluorinated Organic compounds;
.
17. Which one of the following pairs is not correctly matched?
a) Dry Ice: Solid Carbon Dioxide
b) Mustard gas: toxic fluid used in chemical warfare
c) Teflon: Fluorine-containing polymer
d) Fullerene -- Fluorine Containing Organic compounds
Answer. d) Fullerene -- Fluorine Containing Organic compounds
18. Which of the following pairs is not correctly matched?
a) Pyrene: Firefighting
b) Sulfur Dioxide: Acid Rain
c) Freon: Refrigerator
d) Fullerene: Fluorine-containing polymer
Answer. d) Fullerene: Fluorine-containing polymer
19. Which one of the following is also known as " wood spirit"?
a) Methyl alcohol
b) Ethyl alcohol
c) Ethylene alcohol
d) Glycerol
Answer. a) Methyl alcohol;
.
20. Which of the following fertilizer release the most acid in the soil?
a) Urea
b) Ammonium Sulfate
c) Ammonium Nitrate
d) Calcium ammonium nitrate
Answer. b) Ammonium Sulfate;
.
21. Urea is
a) A nitrogen-containing organic compound
b) A nitrogen-containing inorganic compound
c) Plant hormones
d) An energy absorbent
Answer. a) A nitrogen-containing organic compound
22. Which of the following chemical fertilizers is relatively more soluble in water at 20 degrees centigrade?
a) Ammonium Sulphate
b) Urea
c) Diammonium Phosphate
d) Ammonium Chloride
Answer. b) Urea
23. The most common fertilizer for foliar spraying is
a) Sodium nitrate
b) Ammonium Chloride
c) Urea
d) D.A.P
Answer. c) Urea
24. Which one of the following compounds is used to make fireproof clothing?
a) Sodium Sulphate
b) Magnesium Sulphate
c) Ferrous Sulphate
d) Aluminum Sulphate
Answer. d) Aluminum Sulphate;
One of the common compounds used for fireproof clothing is Aluminum Sulphate, which is known for its excellent flame-resistant properties.
25. Which of the following is used as a mosquito repellent?
a) Pyrethrum
b) Rotennone
c) Ephedrine
d) None of the above
Answer. a) Pyrethrum ;
26. Pyrethrin used in mosquito coil is obtained from
a) A seed plant
b) An insect
c) A bacterium
d) A fungus
Answer. a) A seed plant;
.
27. Which one of the following is used as rat poison
a) Zinc Sulphide
b) Lead Sulphide
c) Calcium Phosphate
d) Zinc Phosphide
Answer. d) Zinc Phosphide
28. Which one of the following chemicals has been in use till now for making artificial clouds?
a) Potassium Nitrate
b) heavy Water
c) Sulfur Iodide
d) Silver Iodide
Answer. d) Silver Iodide;
.
29. Which of the following chemicals is used in the artificial rain
a) Silver Iodide
b) Potassium Chlorate
c) Calcium carbonate
d) Zinc Iodide
Answer. a) Silver Iodide
30. Which of the following is correctly matched?
a) Silver Iodide: Horn Silver
b) Silver Chloride: Artificial Rain
c) Zinc Phosphide: Rat Poison
d) Zinc Sulphide: Philosopher Wool
Answer. c) Zinc Phosphide: Rat Poison;
.
31. Red Ink is prepared from
a) Phenol
b) Aniline
c) Congo red
d) Eosin
Answer. d) Eosin;
32.
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