Chemistry – Test 2

Metal used to make wires for safety fuses must have

Consider the following substances

I. Heavy water         II. Graphite

Which of the substances given above is/are used as a moderator in a nuclear reactor?

Which one  of the following is used to slow down the speed of the neutrons in the nuclear reactor?

To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In his context, what advantage does thorium hold over uranium?

I. Thorium is far more abundant in nature than uranium.

II. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium.

III. Thorium produces less harmful waste compared to uranium.

Which of the statements given above is/are correct?

with reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct?

I. Bagasse can be used as biomass fuel for the generation of energy.

II. Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilisers.

III. Molasses can be used for the production of ethanol.

Select the correct answer using the codes given below

The elements of a group in the periodic Table

Matter around us can exist in three different states namely, solid, liquid and gas. Correct order of heir compressibility is

The temperature at which a solid melts to become a liquid at the atmospheric pressure pressure is called its melting point. The melting point of a solid is an indication of

When a solid is heated, it turns directly into a gas. his process is called

Which one of the following elments will not react will not react 

The phosphorus used in the manufacture of the safety matches is

Which one of the following is not a chemical change?

Which one of the following is the chemical name for baking soda?

Suppose you have four test tubes labelled A, B, C and D. A contains plain water, B contains solution of an alkali, C contains solution chloride. Which one of these  solutions will turn phenolphthalein solution pink?

Soap is the sodium of potassium salt of

Which one of the following carbon compounds will not give a sooty flame?

Which one of the following is water gas?

An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?

Which of the commonly used house hold items (s) release Bisphenol A (BPA) which is endocrine disruptor and bad for human health?

1. Steel utensils
2. Plastic coffee mugs
3. Aluminium utensils
4. Plastic water storage bottles
   Select the correct answer using the codes given below

Which enzyme converts glucose to ethyl alcohol ?

Who developed atom bomb ?

The acid used in lead storage cells is :

Soap is prepared by boiling caustic soda with which of the following ?

Bronze is an alloy of :