The Council of Ministers headed by the Prime Minister, is the most Powerful Institution in the Indian Polity. In this context, answer the following: State briefly the position of the Prime Minister in the...

The 4^th term of an A.P. is 22 and 15^th term is 66. Find the first term and the common difference. Hence find the sum of the series to 8 terms.

Action of concentrated Sulphuric acid on hydrated copper sulphate.

State two causes of energy loss in a transformer.

Read the extract given below and answer the questions that follow:

It had no eyes, ears, nose or mouth. It was just a round smooth head - with a school cap on top of it! And that’s where the story should...

Which multi-purpose project provides power to both Punjab and Himachal Pradesh?

How does uniform circular motion differ from uniform linear motion?

A gas of mass 32gms has a volume of 20 litres at S.T.P. Calculate the gram molecular weight of the gas.

A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a...

(i) Why is a nuclear fusion reaction called a thermo nuclear reaction?

(ii) Complete the reaction:

³He₂ + ²H₁ → ⁴He₂ + .... + Energy

State one disadvantage of using coal as a source of power

State the meaning of the term Question Hour.

Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23).

Read the extract given below and answer the questions that follow:

All round the field spectators were gathered Cheering
on all the young women and men Then the final event
of the day was...

The two main metals in Bronze are:

1. Copper and zinc
2. Copper and lead
3. Copper and nickel
4. Copper and tin

Which class of lever will always have MA > 1 and why?