Everyday Science Test 22

Total Questions: 29

1 - The chemical name of vitamin C is

A ) Citric acid
B ) Ascorbic acid ✅
C ) Oxalic acid
D ) Nitric acid

3 - The chemical name of bauxite is

A ) Aluminum oxide ✅
B ) Aluminum chloride
C ) Aluminum sulphate
D ) Hydrate aluminum chloride

4 - The chief constituent of gobar gas is

A ) Methane ✅
B ) Ethane
C ) Propane
D ) Chlorine

5 - Gelatin is added to ice cream to

A ) Hasten freezing
B ) Avoid crystal formation ✅
C ) Give flavor and taste
D ) None

6 - Permanent hardness of water is due to the presence of

A ) Calcium bicarbonate
B ) Magnesium bicarbonate
C ) Calcium sulphate ✅
D ) Sodium bicarbonate

7 - Which metal is used in storage batteries

A ) Copper
B ) Lead ✅
C ) Aluminum
D ) Zinc

8 - Which of the following constitutes of pollutants exhaust is hazardous to man

A ) Carbon monoxide ✅
B ) Carbon dioxide
C ) Lead particals
D ) Carbon particles

9 - Properties of elements determined by

A ) Atomic number ✅
B ) Atomic weight
C ) Neutrons
D ) Protons

10 - During a chloride test white fumes are produced due to formation of

A ) Ammonium chloride ✅
B ) Ammonium nitrate
C ) Silver nitrate
D ) None

11 - Milk is pasteurized in order to

A ) Destroy micro organisms ✅
B ) Enhance taste and flavor
C ) Increase its food value
D ) Detect adultration

12 - Which of the following is non ferrous metal

A ) Cobalt ✅
B ) Aluminum
C ) Nickel
D ) Iron

14 - In vulcanization natural rubber is heated with

A ) Carbon
B ) Sulphur ✅
C ) Silicon
D ) Phosphorus

16 - Bronze is an alloy of

A ) Copper and zinc
B ) Copper and tin ✅
C ) Iron and copper
D ) Zinc and tin

17 - Which of the following is used for preservation of grains

A ) Potassium permanganate
B ) Boric acid
C ) Sodium chloride
D ) Sodium benzoate ✅

18 - The major constituents of air is

A ) Nitrogen ✅
B ) Carbon dioxide
C ) Oxygen
D ) Hydrogen

20 - Which of the following gases is used in cigarettes lighters

A ) Butane ✅
B ) Methane
C ) Propane
D ) Radon

21 - Liquefied petroleum gas consists of

A ) Butane and propane ✅
B ) Ethane and hexane
C ) Ethane and nonane
D ) None

22 - Which of the following is chemical change

A ) Evaporation of water
B ) Burning of candles ✅
C ) Glowing of an electric bulb
D ) Liquefaction of air

23 - During electrolysis metals are deposited at the cathode because the cathode

A ) Supplies electrons ✅
B ) Withdraw electrons
C ) Undergoes oxidation
D ) None

24 - With the rise in temperature conductivity of metals

A ) Decrease
B ) Increase ✅
C ) Remains unchanged
D ) May decrease or increase

25 - Heavy water is known as heavy because it

A ) Is denser than ordinary water
B ) Is an oxide of deuterium ✅
C ) Has a heavy or bad tastes
D ) Has a heavy isotopes of hydrogen

26 - Which of the following is used for silvering of mirror

A ) Silver nitrate ✅
B ) Zinc nitrate
C ) Silver oxide
D ) None

27 - Most of known elements are

A ) Metals ✅
B ) Non metal
C ) Transition metals
D ) Inner transition metals

28 - Oxidation involve

A ) Gain in electrons
B ) Gain of hydrogen
C ) Loss of electrons ✅
D ) Combustion

29 - Which of the following is fire resistance

A ) Asbestos ✅
B ) Gypsum
C ) Dolomite
D ) None