A. Dispersant
B. Alloy
C. Amalgam
D. Metalloid
Chemistry MCQs
In 1774 Oxygen was discovered by:
A. Newton
B. Priestly
C. Faraday
D. B. Franklin
The element required for solar energy conversion is:
A. Silicon
B. Germanium
C. Uranium
D. Selenium
Which one of the following greenhouse gases has the greatest warming effect?
A. Carbon dioxide
B. Carbon monoxide
C. Methane
D. Helium
Liquids that evaporate quickly are known as:
A. Viscous
B. Volatile
C. Transient
D. None of these
Sulfuric acid was prepared by:
A. Johann Glauber
B. Peregrine Phillips
C. Jabir bin Hayyan
D. None of these
The difference between isotopes of ab element is due to the presence of a different number of:
A. Protons
B. Neutrons
C. Electrons
D. Photons
The element first detected spectroscopically in the sun’s atmosphere is:
A. O2
B. Ne
C. H2
D. He
The first metal to be used by man was:
A. Aluminum
B. Copper
C. Silver
D. Iron
The gas used in the manufacture of banaspati from vegetable oil is:
A. Hydrogen
B. Oxygen
C. Nitrogen
D. Carbon dioxide
The hardest form of carbon is:
A. Coke
B. Graphite
C. Carbon
D. Charcoal
The major constituent of Air is:
A. Nitrogen
B. Carbon dioxide
C. Oxygen
D. Hydrogen
The method that cannot be permanently used for removing permanent hardness of water is:
A. Adding sodium carbonate
B. Distillation
C. Adding caustic soda
D. Boiling
The most commonly used bleaching agent is:
A. Sodium Chloride
B. Carbon dioxide
C. Chlorine
D. Alcohol
The most malleable metal is:
A. Platinum
B. Silver
C. Iron
D. Gold
The names of scientists, Newlands, Mendeleev, and Meyer are associated with the development of:
A. Atomic Structure
B. Metallurgy
C. Periodic table of elements
D. Discovery of elements
Purest form of Iron is:
A. Pig Iron
B. Cast Iron
C. Wrought Iron
D. Stainless Steel
The term ‘Carat’ is used to express the purity of gold. The purest form of gold is:
A. 18 Carats
B. 20 Carats
C. 22 Carats
D. 24 Carats
The two elements that exist as liquids at 25° C are
A. Mercury and lithium
B. Mercury and Caesium
C. Bromine and Mercury
D. Argon and Mercury
What is chemical name of bleaching powder?
A. Calcium Carbonate
B. Calcium Hydro chloride
C. Calcium Phosphate
D. Calcium Cynamide
Which of the following elements is found in all organic compounds?
A. Calcium
B. Nitrogen
C. Carbon
D. Oxygen
Which of the following gases is the most toxic?
A. Carbon dioxide
B. Carbon monoxide
C. Sulphur Dioxide
D. Acetic Acid
Which of the following gas is used in the cigarette lighters?
A. Butane
B. Methane
C. Propane
D. Radon
Which of the following is a chemical change?
A. Evaporation of water
B. Burning of candle
C. Glowing of an electric bulb
D. Liquefaction of air
Which of the following has same atomic number and atomic weight?
A. Hydrogen
B. Helium
C. Oxygen
D. Nitrogen
Which of the following is a fertilizer?
A. Sodium Nitrate
B. Sodium Carbonate
C. Sodium peroxide
D. Sodium Thiosulphate
Which of the following is not chemical action?
A. Burning of coal
B. Conversion of steam to water
C. Digestion of food
D. Burning of paper
Which of the following is lightest gas?
A. Nitrogen
B. Hydrogen
C. Ammonia
D. Carbon dioxide