The hydride formed by an element having valence shell electronic configuration is -
1. Saline hydride.
2. Electron rich hydride.
3. Interstitial hydride.
4. No hydride.
The freezing point of heavy water in comparison to normal water is -
1. Higher
2. Lower
3. Same
4. None of the above
An isotope that is used as a tracer in a chemical reaction is-
1.
2.
3.
4. Ortho hydrogen
A compound that can remove both temporary and permanent hardness of water is -
1.
2. Boiling
3.
4.
A compound among the following that has hydrogen in the atomic state is –
1. Metallic hydrides
2. Ionic hydrides
3. Molecular hydrides
4. Water
Exhausted permutit does not contain –
1. ion
2. ion
3. ion
4. ion
Para hydrogen is-
1. Less stable than ortho hydrogen.
2. More stable than ortho hydrogen.
3. As stable as ortho hydrogen.
4. None of the above.
Permutit is chemically known as:
1. Hydrated sodium aluminium silicate
2. Sodium hexa meta-phosphate
3. Sodium silicate
4. Sodium meta-aluminate
Match the column:-
Column I | Column II |
A. Heavy water | P. Bicarbonates of Ca & Mg |
B. Temporary hardness | Q. No foreign ions |
C. Soft water | R. D2O |
D. Permanent Hardness | S. Sulphates of Ca & Mg |
A | B | C | D | |
1. | S | P | Q | R |
2. | R | P | Q | S |
3. | P | Q | R | S |
4. | S | R | P | Q |
Calcium carbide with heavy water generates-
1.
2.
3.
4.