Top 1000+ Solved Chemistry MCQ Questions Answer
Q. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is -
a. Hydrogen
b. Oxygen
c. Carbon dioxide
d. All of them
Q. Pearl is mainly made up of which among the following?
a. Protein
b. Calcium Carbonate
c. Silica
d. Sodium Carbonate
Q. As we all know that, Gunpowder is a mixture of sulfur, charcoal, and potassium nitrate. Which among these components adds in speeding up the burning of the Gun Powder?
a. Only Potassium Nitrate
b. Only Charcoal
c. Only Sulphur
d. Both Sulphur and Potassium Nitrate
Q. Which among the following is not correctly matched?
a. Brass: copper and zinc
b. Duralumin : Copper and aluminum
c. Constantan: Copper and Nickel
d. White Gold- Gold and Silver
Q. Bring out the incorrect usage
a. Heavy water – Moderator
b. DDT – Insecticide
c. Methyl Alcohol – Beverage
d. Liquid Ammonia – Refrigerant
Q. Which among the following is the main constituent of vegetable oil and animal fats?
a. Glycogen
b. Triglyceride
c. Galactose
d. Diglyceride
Q. Which among the following can be used as a preservative in Tomato Juice?
a. Sodium Chloride
b. Sodium carbonate
c. Sodium benzoate
d. Sodium Lauril Sulphate
Q. Which among the following gas has lowest auto-ignition temperature?
a. Methane
b. Hydrogen
c. Ethylene
d. Carbon Di Sulphide
Q. Which among the following is the most stable form of carbon under standard conditions?
a. Charcoal
b. Graphite
c. Diamond
d. Amorphous carbon
Q. Which among the following statement is correct?
a. Both Melting point & Boiling Point of Heavy water are higher than normal water
b. Both Melting point & Boiling Point of Heavy water are lower than normal water
c. Melting point is higher and Boiling Point is lower than normal water
d. Melting point is lower and Boiling Point is higher than normal water
Q. Which among the following gives hissing sound when dissolved into H2O?
a. CaCO2
b. Ca(OH)2
c. CaO
d. CaCl2
Q. Which among the following is the lowest atomic number element without any stable isotopes?
a. Technetium
b. Molybdenum
c. Ruthenium
d. Niobium