What is the angle between the hour hand and the minute hand

Compressed natural gas (CNG) primarily consists of which gas?

Which element gives hardness to stainless steel?

The SI unit of acceleration is_________.

The SI unit of mechanical energy is

The efficiency of a Carnot engine depends on:         

When a body falls freely

In the synthesis of aspirin (acetylsalicylic acid) from salicylic acid, which reagent is used?

Anions are formed through which process?

Who measured the velocity of light first?

Match the following columns and choose the correct option: