Hydrogen peroxide is obtained by the electrolysis of ______.
1. water
2. sulphuric acid
3. hydrochloric acid
4. fused sodium peroxide
Which of the following reactions is an example of use of water gas in the synthesis of other compounds?
1.
2.
3.
4.
Which of the following ions will cause hardness in water sample?
1. Ca2+
2. Na+
3. Cl-
4. K+
A water softening reagent among the following is -
1.
2.
3.
4.
Elements of which of the following group(s) of periodic table do not form hydrides?
1. Groups 7, 8, 9
2. Group 13
3. Groups 15, 16, 17
4. Group 14
The group that has hydride formed by only one member is -
1. 6
2. 7
3. 8
4. 9
Which of the following statements are not true for hydrogen?
a. | It exists as a diatomic molecule. |
b. | It has one electron in the outermost shell |
c. | It can lose an electron to form a cation that can freely exist |
d. | It forms a large number of ionic compounds by losing an electron |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Dihydrogen can be prepared on a commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of CO and H2 gas is formed. It is known as _____.
a. Water gas
b. Syngas
c. Producer gas
d. Industrial gas
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following statement(s) is/are correct in the case of heavy water?
a. | Heavy water is used as a moderator in nuclear reactor |
b. | Heavy water is more effective as solvent than ordinary water |
c. | Heavy water is more associated than ordinary water |
d. | Heavy water has lower boiling point than ordinary water |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following statements about hydrogen are correct?
1. | Hydrogen has three isotopes of which protium is the most common |
2. | Hydrogen never acts as a cation in ionic salts |
3. | Hydrogen ion, H+, exists freely in solution |
4. | Dihydrogen does not act as a reducing agent |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)