SAT (Stage-2) M...

Observe the group 17 of the periodic shown below:

Identify the correct statement about the elements.

I. The reactivity of the elements decreases down the group.
II. The atomic radius decreases down the group.
III. The number of valence electrons remain the same for all the elements.
IV. The valency remains the same for all the elements.

Read the information given in statement I and II and hence answer the question asked in the statement III

I. The first shell can accommodate 2 electrons and the period I has 2 elements.
II. The second shell can accommodate 8 electrons and the period II has 8 elements.
III. The third shell can accommodate 18 electrons and the number of elements in the period III are:

Which of the following is a crystalline form of carbon?

Select the correct statement.

An organic compound gives red colour with litmus solution. Which of the following is the probable functional group in the compound?

Match the following.

Metals being good conductors of heat and having high melting points have a utility as materials for making cooking vessels.

Aluminium vessels are anodised as a final step of the manufacturing process. What is the advantage of this technique?

The induced emf produced when a magnet is inserted into a coil does not depend upon

Which of the following statements about electromagnets is not true?

A body of mass 2 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. The force required to keep the body moving with the same velocity is

A body of mass M collides against a wall with velocity V and rebounds with the same speed. Its change of momentum is

Dispersion produced by a prism depends upon

In a room, artificial rain is produced at one end and a strong source of white light is switched on at the other end. To observe the rainbow, an observer must