Chemistry (General Science): All SSC Exams Previous Years Questions Papers Solved Part 15

Q.1:- J.J. Thomson’s proposed model of action is generally called  ____ model.

1. Cream and cake
2. Plum and pudding
3. Plum and cake
4. Cream and pudding

Q.2:- The main component of liquid bleach is ?

1. Sodium Chloride
2. Sodium Hypochlorite
3. Hydrochloric Acid
4. Sodium Hypochlorate

Q.3:- Which one of the following vegetable oils is used in the manufacture of paints ?

1. Palm oil
2. Sunflower oil
3. Linseed oil
4. Cottonseed oil

Q.4:- Which of the process is known as Nitrification ?

1. Reaction of Nitrogen Monoxide with Oxygen to form Nitric Acid
2. Reaction of Nitrogen Dioxide with water to form Nitric Acid
3. Conversion of Ammonia to Nitrites
4. Conversion of Nitrite to Nitric Oxide

Q.5:- Which one of the following has a maximum tendency to form M3 ion ?

1. N
2. Bi
3. P
4. As

Q.6:- Activated Charcoal is used to remove colouring matter from pure substances by ?

1. Bleaching
2. Oxidation
3. Adsorption
4. Reduction

Q.7:- Helium is added to the Oxygen supply of deep sea divers because it is ?

1. Less poisonous than Nitrogen
2. Lighter than Nitrogen
3. Readily miscible with Oxygen
4. Less soluble in blood than Nitrogen at high pressure

Q.8:- Which of the following has pH value 7 ?

1. Pure water
2. H₂SO₄
3. Sodium Carbonate
4. HCL

Q.9:- Atoms of same element having different mass numbers are called ?

1. Isobars
2. Isotopes
3. Isotones
4. Isomers

Q.10:- Sullage water is ?

1. Waste water released from kitchen
2. Waste water released from toilets
3. Waste water released from factories
4. Waste water released from hospitals

Q.11:- Potassium Permanganate is used for purifying drinking water, because ?

1. It is a reducing agent
2. It is an oxidising agent
3. It is a sterilising agent
4. It dissolves the impurities of water

Q.12:- Calcium salts used as fertilizer is ?

1. Calcium Carbide
2. Calcium Carbonate
3. Calcium Cyanide
4. Calcium Sulphate

Q.13:- Nitric Acid does not react with ?

1. Gold
2. Copper
3. Zinc
4. Iron

Q.14:- Which of the following is a commercial source of energy ?

1. Agricultural waste
2. Dried dung
3. Sun
4. Natural gas

Q.15:- When ice cubes are made, the entropy of water ?

1. Does not change
2. Decreases
3. Increases
4. May either increase or decrease depending on the process used

Q.16:- Glycol is used to manufacture which of the following ?

1. Nylon
2. Artificial Silk
3. Terylene
4. Rubber

Q.17:- Which of the following is not soluble in water ?

1. Lead Sulphate
2. Zinc Sulphate
3. Potassium Sulphate
4. Sodium Sulphate

Q.18:- What is a Bakelite ?

1. Solution
2. Acid
3. Base
4. Polymer

Q.19:- Which of the following substance’s smell is similar to Ethanoic Acid ?

1. Tomato Juice
2. Kerosene
3. Vinegar
4. Lemon

Q.20:- Which of the following is not a commercial source of energy ?

1. Coal
2. Petroleum
3. Natural Gas
4. Firewood

Q.21:- What do you understand by the term Espuma ?

1. Foam
2. Soap
3. Salt
4. Calcium

Q.22:- Which of the following will replace Hydrogen from acids to form salts ?

1. S
2. Na
3. Ag
4. P

Q.23:- Organic compounds are ?

1. Covalent compounds
2. Ionic compounds
3. Coordination compounds
4. Interstitial compounds

Q.24:- Aerated water contains ?

1. SO₂
2. NO₂
3. H₂
4. CO₂

Q.25:- The highest volume of gases in lower atmosphere is comprised of ?

1. Hydrogen
2. Carbon Dioxide
3. Oxygen
4. Nitrogen