Prelims

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance ?

Match List I (Physiological processes) with List II (Cell organelles) and select the correct answer by using the codes given below the lists

The alpha-particle carries two positive charges. Its mass is very nearly equal to that of

The offending substance in the liquor tragedies leading to blindness, etc.. is

‘Diamond Ring’ is a phenomenon observed

A simple machine helps a person doing

Consider the following statements : A person in a spaceship located half way between the earth and the sun will notice that the I. Sky is jet black. II. Stars do not twinkle. III. Temperature outside the spaceship is much higher than that on the surface of the earth. Of these statements

Domestic electrical wiring is basically a

Assertion (A): Transformer is useful for stepping up or stepping down voltages. Reason (R): Transformer is a device used in D.C. circuits. In the context of the above two statements, which one of the following is correct ?

Consider the following statements : At the present level of technology available in India, solar energy can be conveniently used to
I. supply hot water to residential buildings.
II. supply water for minor irrigation projects.
III. provide street lighting.
IV. electrify a cluster of villages and small towns. Of these statements