Safety from Acids

Q.

Which of the following is the major cause for discoloration of the Taj Mahal?

1. Acid rain

2. Evaporation

3. Greenhouse effect

4. High Temperature

Q.

Which of the following is the major cause for discoloration of the Taj Mahal?

1. Greenhouse effect

2. High Temperature

3. Acid rain

4. Evaporation

Q. Paper on reaction with concentrated ___ turns black and has a burnt look.

1. lactic acid
2. boric acid
3. conc. sulphuric acid
4. dil. hydrochloric acid

Q.

Which of the following is the major cause for discoloration of the Taj Mahal?

1. High Temperature

2. Acid rain

3. Evaporation

4. Greenhouse effect