It is not advisable to sleep under a tree at night because of the

2, 4, 6-Trinitrotoluene
1.is an important explosive
2.is also called trotyl
3.is not a component of the explosive 'amatol'
4.explodes with violence on detonation. Select the correct answer by using the code below,

On a clear night, we can see nearly _____ stars with naked eyes

Which of the following metals is in a liquid state at normal room temperature?

Mahrishi Susrut was a famous surgeon in India before Christ. He had earned a reputation for his surgeries, especially of:
1.Eye
2.Heart
3.Kidney
4.Nose
 Select the correct answer using the codes given below:

Consider the following statements:
1.Mica is a good conductor of heat.
2.Mica is a bad conductor of heat.
3.Mica is a good conductor of electricity.
4.Mica is a bad conductor of electricity. Which of the above statements is/are correct?

The sky appears blue because

First synthetically prepared organic compound was

A dicot root shows

A travelling wave passes a point of observation where the time interval between successive crests is 0.2 s. Which of the following is then true?