Ionic compounds have a high melting point.

The aim of the Fountain Experiment is to prove that:

1. HCl turns blue litmus red
2. HCl is denser than air
3. HCl is highly soluble in water
4. HCl fumes in moist air.

The data on the number of patients attending a hospital in a month are given below. Find the average (mean) number of patients attending the hospital in a month by using the shortcut method.

Take the assumed...

The 1914 and 1939 Wars that engulfed almost the entire world, were known as World Wars due to its unprecedented impact and damage. In this context, Explain the consequences of the Second World War...

Write a balanced chemical equation for the preparation of each of the following salts:

1. Copper carbonate
2. Ammonium sulphate crystals

In the transmission of power, the voltage of power generated at the generating stations is stepped up from 11kV to 132kV before it is transmitted. Why?

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

(i) Define Calorimetry. (ii) Name the material used for making a Calorimeter. (iii) Why is a Calorimeter made up of thin sheets of the above material answered in (ii)?

Give a reason: Nearly seventy percent of Indians do not use air transport

When a ray of light enters from one medium to another having different optical densities it bends. Why does this phenomenon occur?

Give two ways by which the trees that are found here have adapted to the climate.

What is meant by Appellate Jurisdiction of the Supreme Court?

Carbon monoxide is dangerous when inhaled.

He, Ar, Ne (Increasing order of the number of electron shells)

Choose the method of preparation of the following salts, from the methods given in the list:

[List: A. Neutralization B. Precipitation C. Direct combination D. Substitution]

1. Lead chloride
2. Iron (II)
...

The pituitary hormone which stimulates contraction of uterus during child birth.