Identify the substances underlined: The dilute acid which is an oxidizing agent.

The prime source of chlorofluorocarbons is:

1. Vehicular emissions
2. Industrial effluents
3. Domestic sewage
4. Refrigeration equipments

Explain briefly the term ‘Court of Record’ with reference to the High Court.

Under what condition can a non-member of Parliament be made a Minister?

A hemispherical and a conical hole is scooped out of a solid wooden cylinder. Find the volume of the remaining solid where the  measurements are as follows:

The height of the solid cylinder is 7 cm, radius...

In the electroplating of an article with silver, the electrolyte sodium argento cyanide solution is preferred over silver nitrate solution.

Give reasons why:

The following figure represents a solid consisting of a right circular cylinder with a hemisphere at one end and a cone at the other. Their common radius is 7 cm. The height of the cylinder and cone...

State the position of the object in front of a converging lens if:

1. It produces a real and same size image of the object.
2. It is used as a magnifying lens.

A strong chemical substance which is used on objects and surfaces in our surroundings to kill germs

1. Cresol
2. Carbolic acid
3. Iodine
4. Mercurochrome

Give the IUPAC name for each of the following

Cutting of trees should be discouraged.

Give biological reason.

What can an individual do to reduce waste at home?

Write the balanced chemical equation to prepare ammonia gas in the laboratory by using an alkali.

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
...

1. How can a temperature in degree Celsius be converted into S.I. unit of temperature?
2. A liquid X has the maximum specific heat capacity and is used as a coolant in Car radiators. Name the liquid X.

Give two advantages of using bio-gas as a source of power.