Washing soda can be used-

1. In Glass and paper industries.
2. In the manufacture of sodium compounds such as borax.
3. As a cleaning agent for domestic purposes.
4. Increasing permanent hardness of the water.

Select the correct answer from the code given below:

Which of the following statements is/are CORRECT?

$1$. Rutherford bombarded very thin gold foil with alpha particles, but most of the alpha particles passed through the gold foil undeflected.
$2$. Gamma rays are neutral and don't have any particles.
$3$. Beta rays are similar to electron particles.

Select the correct answer using the code given below:

Which of the following is a form of calcium carbonate?

1. Limestone
2. Chalk
3. Marble

Select the correct answer from the code given below:

Which of the following statements are correct?

1. Isotopes have the same number of protons but different numbers of neutrons.
2. Isobars have the same numbers of nucleons but different numbers of protons.

Select the correct answer using the code given below:

Consider the following statements about Rocksalt:

1. They are often brown in color due to the presence of sodium chloride.
2. Beds of rock salt were formed when seas of bygone ages dried up.
3. Rock salt is mined like coal.

Which of the statements given above is/are true?

If someone in the family is suffering from a problem of acidity after overeating, which of the following can be suggested as a remedy?

1. Lemon juice
2. Vinegar
3. Baking soda
4. Tomato Juice

Select the correct answer from the code given below:

Which of the following was not explained by Dalton's atomic theory?

1. Laws of chemical combination
2. Laws of conservation of mass
3. Laws of constant composition
4. Laws of multiple proportions

Select the correct answer using the code given below: