How do you identify ammonia gas? Write down any three methods.

We can identify ammonia gas by the following ways:
        - Treating moist red litmus paper with ammonia. It turns blue since ammonia is basic in nature.
        - It has a strong pungent odor.
        - When a glass rod dipped in conc. Hcl is brought in contact with ammonia gas, it forms a white fume of NH₄cl. 

A student needed to use the ideal gas for a certain experiment.But the ideal gas does not exist. Suggest what things this student could do to solve his problem.

Assuming that the student wants to perform experiments using gas laws, we can suggest the student to perform the following tasks:

1. Maintain High Temperature: At this temperature, the kinetic energy of the gas molecules becomes really high which becomes dominant over the existing potential energy of the gas molecules. This approaches the no intermolecular force of attraction between molecules postulate of kinetic theory of gases.
2. Maintain Low Pressure: With this, the gas molecules are free to...

Write a program that accepts the length of three different rods and displays whether a triangle can be formed or not by using the rods. [Hint: A triangle can be formed if the sum of two sides is gr...

What is the drawback of Newton's formula for the velocity of sound in gas? What do you understand by Laplace's correction? Discuss the effect of temperature and pressure on velocity of sound.

The drawback of Newton's formula for velocity of sound are:
1. The velocity of sound calculated from Newton's formula is279.9 m/s at N.T.P. Experimentally, they found that the velocity of sound in air at N. T. P is 332 m/s. Thus, there is a considerable difference between the value predicted by Newton’s formula and the experimental value.

2. Experimental value is 16% greater than the value given by the formula. Newton failed to satisfactorily explain the difference.

Laplace Correction:

Newton...

Define the following terms:a) Efflorescenceb) Deliquescencec) Hygroscopic d) Water of crystallization

a) Efflorescence: The phenomenon in which certain hydrated substances lose their water of crystallization partly or completely when exposed to ordinary atmospheric conditions for sometimes is called as efflorescence.

b) Deliquescence: The phenomenon in which hygroscopic substances absorb moisture from the air to such an extent that they are finally converted into solution form is called deliquescence.

c) Hygroscopic: Those substances which absorb moisture when exposed to ordinary atmospheric...