Practice Biology in human welfare - general science mcq Online Quiz (set-1) For All Competitive Exams

Q-1)   Silk worm is a

(a)

(b)

(c)

(d)


Q-2)   Jaya and Ratna developed for green revolution in India are the varieties of

(a)

(b)

(c)

(d)

Explanation:

Jaya and Ratna are two rice varieties developed for green revolution in India.


Q-3)   Murrah, Mehsana, Jaffarbadi are breeds of

(a)

(b)

(c)

(d)


Q-4)   The example of non-renewable source of energy is

(a)

(b)

(c)

(d)


Q-5)   Chemically, the silk is

(a)

(b)

(c)

(d)


Q-6)   Jatropha is a

(a)

(b)

(c)

(d)

Explanation:

Jatropha is a genus of flowering plants in the spurge family, euphorbiaceae. Currently the oil from Jatropha curcas seeds is used for making biodiesel fuel in Phillippines and in Brazil.


Q-7)   First cloned animal

(a)

(b)

(c)

(d)


Q-8)   Which one of the following is not an antibiotic ?

(a)

(b)

(c)

(d)


Q-9)   Cheese and Yogurt are products obtained by

(a)

(b)

(c)

(d)


Q-10)   Most of eubacterial antibiotics are obtained from

(a)

(b)

(c)

(d)

Explanation:

Bacillus subtilis is used to extract antibiotics substilin or Bacitracin.


Q-11)   The most common species for bee-keeping in India is

(a)

(b)

(c)

(d)


Q-12)   Yeast Saccharomyces cervisiae is used in the industrial production of

(a)

(b)

(c)

(d)

Explanation:

Commercial ethanol or ethyl alcohol is produced by yeast Saccharomyces cerevisiae.


Q-13)   Streptokinase which is used as a ‘clot buster’ obtained from

(a)

(b)

(c)

(d)


Q-14)   The term antibiotic was coined by

(a)

(b)

(c)

(d)


Q-15)   Blue revolution is related to the following field

(a)

(b)

(c)

(d)


Q-16)   Organic farming is the technique of raising crops through use of

(a)

(b)

(c)

(d)


Q-17)   Which gas is responsible for the puffed-up appearance of dough ?

(a)

(b)

(c)

(d)


Q-18)   Domestication of honey bees is called

(a)

(b)

(c)

(d)


Q-19)   Which of the following is the pair of biofertilizers?

(a)

(b)

(c)

(d)


Q-20)   Three crops that contribute maximum to global food grain production are

(a)

(b)

(c)

(d)

Explanation:

Three crops that contribute maximum to global food grain production are wheat, rice and maize, which belong to the family Poaceae (Graminae).