From the diagram given below, answer the questions that follow:

1. What kind of pulleys are A and B?
2. State the purpose of pulley B.
3. What effort has to be applied at C to just raise the load L=20kgf?...

The diagram below shows a claw hammer used to remove a nail:

1. To which class of lever does it belong?
2. Give one more example of the same class of lever mentioned by you in (i) for which the mechanical
...

With reference to the powers and functions of the High Court. Explain briefly the meaning and scope, The High Court as a Court of Record.

Identify the gas evolved and give the chemical test in each of the following cases:

1. Dilute hydrochloric acid reacts with sodium sulphite.
2. Dilute hydrochloric acid reacts with iron (II) sulphide.

Action of heat on aluminum hydroxide.

Which property of sulphuric acid is shown by the reaction of concentrated sulphuric acid with:

1. Ethanol?
2. Carbon?

The process by which certain ores, specially carbonates, are converted to oxides in the absence of air.

Complete the following by selecting the correct option from the choices given:

1. pH of acetic acid is greater than dilute sulphuric acid. So acetic acid contains ______ concentration of H⁺ ions.
...

Action of hot and concentrated Nitric acid on copper.

Write balanced chemical equation.

Give a geographical reason: Jute is retted after it has been harvested.

 The mild chemical substance which when applied on the body kills germs. 

Give appropriate biological / technical term.

If the 6th term of an A.P. is equal to four times its first term and the sum of first six terms is 75, find the first term and the common difference.

Correct the following statements by changing the underlined words: The outermost layer of Meninges is Pia mater.

Mention two causes of soil erosion in India.

Give an example of a non-contact force which is always of attractive nature.

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