set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which bacteria is utilized in gober gas plant?

a) Ammonifying bacteria

b) Methanogens

c) Nitrifying bacteria

d) Denitrifying bacteria

Question : 2

According to recent proof, the life on earth emerged approximately

a) Before 20,00,000 years

b) Before 20,000 years

c) Before 2,00,000 years

d) Before 2,000,000,000 years

Question : 3

To which of the following types of animals are Salamanders closely related?

a) Prawns and Crabs

b) Dolphins and Whales

c) Frogs and Toads

d) Seals and Walruses

Question : 4

Down’s syndrome is due to

a) chromosome number increase in 18th pair autosome

b) chromosome number decrease in 21st pair autosome

c) chromosome number increase in 21st pair autosome

d) chromosome number decrease in 18th pair autosome

Question : 5

The book ‘Origin of Species’ is written by

a) Darwin

b) Watson

c) Aristotle

d) Lamarck

Question : 6

Which one of the following is not a feature of eutrophic lakes?

a) Primary productivity is low

b) Blooms are frequent in eutrophic lakes

c) Plant nutrient flux is high

d) Dominated by blue green algae