Tnpsc Question interview questions – page 2

Which one of the following is correct? Setting of Plaster of Paris is

1. Combination with atmospheric
2. Hydration leading to another hydrate
3. Oxidation with atmospheric oxygen
4. Dehydration

Usually doctors recommend the foodstuffs which are prepared in the oil with comparison to the vegetable ghee because

1. Oil has unsaturated fats
2. Oil has saturated fats
3. To store the oil is convenient
4. Oil is cheeper

Contact lenses are made from

1. Teflon
2. Lucite
3. Polystyrene
4. Poly vinyl chloride

Water is a compound because

1. It exists as a solid, a liquid or a gas
2. It contains hydrogen and oxygen
3. It contains two different elements joined by chemical bonds
4. It cannot be split up into simpler substances by chemical means

The term ‘nucleons’ apples to

1. Protons and neutrons
2. Protons and electrons
3. Neutrons
4. Protons

The chemical substance which is easily soluble in water is

1. Ammonia
2. Iodine
3. Nitrogen
4. Carbon

Which of the following chronological order of the density of various substances is true?

1. Gold>steel>mercury
2. Gold> mercury>steel
3. Steel>gold>mercury
4. Steel>mercury>gold

The rusting of iron nail

1. does not affect weight but iron is reduced
2. does not affect weight but iron is oxidized
3. increases its weight
4. decreases its weight

Aluminium chloride is

1. Acidic and coordinate
2. Anhydrous and ionic
3. Anhydrous and covalent
4. Basic and covalent

What is a laughing gas?

1. Sulphur dioxide
2. Hydrogen peroxide
3. Carbon monoxide
4. Nitrous oxide

Which one among the following most correctly determines the atomic number of an element?

1. Number of ions
2. Number of nucleons
3. Number of protons
4. Number of protons and electrons

Which of the following metals can deposit copper from copper sulphate solution?

1. Gold
2. Iron
3. Mercury
4. Platinum

In terms of magnetic properties, oxygen belongs to

1. diamagnetic materials
2. paramagnetic materials
3. magnetic materials
4. ferromagnetic materials

Which one of the following is used in dry cleaning of garments?

1. Asphalt
2. Diesel oil
3. Lubricating oil
4. Naphtha

Glass is actually

1. A nitrified liquid
2. An elastic solid
3. An ionic solid
4. A crystalline solid

If a proton of mass m is moving with velocity of light, its mass will be

1. Zero
2. Infinite
3. Large but finite
4. Unchanged

On rusting in the iron

1. Its wt. is decreased
2. Its wt. is increased
3. No changes take place
4. Its wt. changes

On chemical analysis, a bottle cork is found to contain primarily

1. Lipids
2. Tannins
3. Carbohydrates
4. Proteins

When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?

1. Covalent attraction
2. Dipole interaction
3. Vander walls forces
4. Hydrogen bond formation

The gas which had leaked out of Union Carbide factory in Bhopal was

1. Methyl isocynate
2. Carbon monoxide
3. Methyl cyanide
4. Sulphur dioxide

Which of the following is also known by the name of liquid gold?

1. Aquaregia
2. Pyrine
3. Platinum
4. Petroleum

Which one among the following is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage?

1. Thio ethanol
2. Ethanol
3. Chloroform
4. Methane

Plaster of paris

1. does not suffer any changes in volume while setting
2. is highly volatile
3. expands while setting
4. contracts while setting

The permanent hardness of water appears due to

1. Chloride and sulphate of calcium and magnesium
2. Bicarbonates of calcium and magnesium
3. Carbonates of calcium and magnesium
4. None of these

The valecy of magnesium is

1. 1
2. 2
3. 3
4. 4

The spmerty wax is extracted from the

1. Whale
2. Petroleum
3. Roofs of honey
4. Palm leaves

Human stomach produces acid ‘X’ which helps in digestion of food. Acid ‘X’ is

1. Acetic acid
2. Citric acid
3. Methanoic acid
4. Hydrochloric acid

The chemist who propounded the vital force theory of the power of life is

1. Berthlot
2. Berzealus
3. Kolbe
4. Wholer

The type of glass used in making lenses and prisms is

1. Flint glass
2. Jena glass
3. Pyrex glass
4. Soft glass

Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are

1. Uranium and Boron
2. Cadmium and uranium
3. Boron and Cadmium
4. Boron and Plutonium