The alloy is-

(A) mixture of two or more metals

(B) a mixture of a metal and a non-metal

(C) can not be separated into their components by physical methods

(D) brass is a mixture of zinc and tin

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The ozone layer which is responsible for protecting life on earth from harmful UV radiation from the Sun is located in which layer of the atmosphere?

Who among the following is known as the father of Indian surgery and ophthalmology?

Which of the following are "unicellular" organisms?

(A) Plasmodium

(B) Protoza

(C) Spirogyra

(D) Leishmania

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Asphalt is a ______________.

Sound cannot travel through:

Consider the following option arranged according to classification.....

(A) Order

(B) Family

(C) Species

(D) Genus

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