Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Soil having high content of aluminum and iron oxide is also known as -
a. meadow soil
b. pedalfer soil
c. chernozen soil
d. podzol soil
Q. Chile saltpeter is the common name of:
a. Sodium nitrate
b. Potassium nitrite
c. Potassium nitrate
d. Sodium nitrite
Q. The gas liberated in the Bhopal gas tragedy was:
a. Pheynl isocynate
b. Acetylene
c. Ethylene
d. Methyl isocynate
Q. Which of the following is not a gaseous air pollutant?
a. Oxides of nitrogen
b. Hydrocarbon
c. Smoke
d. Oxides of sulphur
Q. The chemical name or Quartz is –
a. Calcium oxide
b. Calcium phosphate
c. Sodium phosphate
d. Sodium silicate
Q. The depletion in Ozone layer is caused by -
a. Nitrous oxide
b. Carbon dioxide
c. Chlorofluorocarbons
d. Methane
Q. Which one of the following elements is essential for the construction of nuclear reactors?
a. Cobalt
b. Nicke
c. Zirconium
d. Tungsten
Q. The isotope atoms differ in -
a. number of neutrons
b. atomic number
c. number of electrons
d. atomic weight
Q. This substance is sweet-smelling and is used in making perfumes and flavouring agents. It is called-
a. Sodium ethanoate
b. Lime water
c. Hydrogencarbonates
d. Ester
Q. An acid is a substance which
a. Donates a proton
b. Accepts an electron
c. Give H+ in water
d. All
Q. Two electrons in an orbital are differentiated by which of the following?
a. Magnetic quantum number
b. Spin quantum number
c. Principal quantum number
d. Azimuthal quantum number
Q. The most abundant element in the earth's atmosphere is –
a. Argon
b. Nitrogen
c. Oxygen
d. Krypton