1. Which of them is used as solvent for dry cleaning?
a. Diesel
b. Kerosene
c. petrol
d. Paraffin wax
2. What is called black gold?
a. Petroleum
b. Coal
c. Coal Tar
d. Natural gas
3. Rhizobium (a Bacteria) which fixes atmospheric nitrogen are found in nodules growing in-
a. Roots of leguminous plants
b. Leaves of leguminous plants
c. Stem of Leguminous plants
d. All of the above.
4. Rabi Crops are grown in _______ season.
a. Summer
b. Spring
c. Winter
d. rainy
5. Growing different crops alternately on the same land is technically called-
a. Crop Alternation
b. Crop Rotation
c. Crop Revolution
d. Crop Change
6. The solution of ash of magnesium ribbon is-
a. Acidic
b. Basic
c. Neutral
d. All of these
7. When sulphur dioxide is dissolve in water then-
a. Sulphur is formed
b. Sulphur trioxide is formed
c. Sulphuric acid is formed
d. Sulphurous acid is formed.
8. Which one of the following gas burns with the "pop" sound?
a. Oxygen
b. Hydrogen
c. Chlorine
d. Hydrogen sulphide
9. The process of conversion of Sugar into Alcohol is called____________.
a. infection
b. fermentation
c. moulding
d. nitrogen fixation
10. Dengue fever is spread by—
a. House fly
b. Female Anopheles mosquito
c. Female Aedes mosquito
d. Bees
No comments:
Post a Comment