April 20, 2024
Which one of the following is also known as 'wood spirit'?
  • (A) Methyl alcohol
  • (B) Ethylene glycol
  • (C) Ethyl alcohol
  • (D) Glycerol
Consider the following pairs about acids and their common sources:
1. Apple: Malic acid
2. Tomato: Tartaric acid
3. Orange: Ascorbic acid
4. Tea: Formic acid
Which of the pairs given above are correct?
  • (A) 1 and 2 only
  • (B) 1 and 3 only
  • (C) 3 and 4 only
  • (D) 2 and 4 only
Which of the following statement about physical property of carbon is not correct?
  • (A) Carbon is a non-metal found in various allotropic forms from soft powder to hard solid.
  • (B) All the allotropic forms of carbon are solids whereas its compounds exist in solid, liquid and gaseous state.
  • (C) Amorphous forms of carbon have low melting and boiling point compared to crystalline forms.
  • (D) Carbon is highly soluble in water and other common solvents.
Consider the following statements about organic fertilizers:
1. Fertilizers containing only plant or animal based materials or those synthesized by microorganisms are called organic fertilizers.
2. Urea is example of an organic fertilizer.
Which of the statements given above is/are correct?
  • (A) 1 only
  • (B) 2 only
  • (C) Both 1 and 2
  • (D) Neither 1 nor 2
Which of the following is added to control the “setting of cement”?
  • (A) Gypsum
  • (B) Epsom
  • (C) Sand
  • (D) Clay
How does the matter change during liquefaction of gases?
  • (A) Gas to liquid
  • (B) Liquid to gas
  • (C) Solid to liquid
  • (D) Gas to solid
Gases used in welding are :
  • (A) Oxygen and hydrogen
  • (B) Oxygen and nitrogen
  • (C) Oxygen and acetylene
  • (D) Hydrogen and acetylene
One mole of hydrogen gas burns in excess of oxygen to give 290 KJ of heat. What is the amount of hear produced when 4g of Hydrogen gas is burnt under the same conditions
  • (A) 145 Ki
  • (B) 580 Kj
  • (C) 290 Kj
  • (D) 1160 Kj
Chemical name of washing soda is
  • (A) Sodium chloride
  • (B) Sodium hydrogen carbonate
  • (C) Sodium carbonate
  • (D) Sodium carbonate
Which one of the following pairs is not correctly matched?
LIST -1 LIST-2
1. Fullerene - Organic compounds containing fluorine
2. Dry Ice - Solid carbon dioxide
3. Keratin - Protein found in the outer layer of human skin
4. Mustard gas - Poisonous liquid used is chemical warfare
  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4
The metals that float when treated with water are - 
  • (A) Copper and silver
  • (B) Iron and zinc
  • (C) Magnesium and calcium
  • (D) Aluminum and lead
Which one of the following pairs is not correctly matched?
LIST -1 (Major Constituents) - LIST-2 (Fuel Gases)
A. Carbon monoxide, Hydrogen - 1. CNG
B. Butane, Propane - 2. LPG
C. Methane, Ethane -3. Coal gas
D. Hydrogen, Methane, Carbon Monoxide - 4. Water gas
  • (A) A — 2, B – 1, C – 3, D – 4
  • (B) A — 3, B – 2, C – 3, D – 1
  • (C) A — 4, B – 3, C – 1, D – 2
  • (D) A — 3, B – 2, C – 1, D – 4
Fermentation of sugar leads to -
  • (A) Ethyl alcohol
  • (B) Methyl alcohol
  • (C) Acetic acid
  • (D) Chlorophyll
Burning of hydrogen produces -
  • (A) Oxygen
  • (B) Ash
  • (C) Soil
  • (D) Water
Consider the following statements about Nylon:
1. Synthetic Fibre Nylon is the first fully processed synthetic fibre.
2. It was popular during the Second World War for the use of parachutes and rope materials for climbing.
3. Nylon thread is actually stronger than a steel wire.
Which of the statements given above is/are correct?
  • (A) 1 and 2 only
  • (B) 2 and 3 only
  • (C) 1 and 3 only
  • (D) 1, 2 and 3

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