Correlate the items listed in Column I with those listed in Column II.
Column I | Column II |
A. Synthesis gas | 1. Na2[Na4(PO3)6 ] |
B. Heavy water | 2. Mixture of CO and H2 |
C. Calgon | 3. Prolonged electrolysis of water |
D. Salt like hydrides | 4. Stoichiometric compounds of s-block elements |
Codes
A | B | C | D | |
1. | 4 | 3 | 2 | 1 |
2. | 2 | 3 | 1 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 3 | 2 |
Match the items in Column I with the relevant items in Column II.
Column I | Column II |
A. Hydrogen peroxide is used as a | 1. Sodium hexametaphosphate |
B. Used in Calgon method | 2. Clark's method |
C. Temporary hardness of hard water is removed by | 3. Reducing agent |
Codes
A | B | C | |
1. | 3 | 2 | 1 |
2. | 1 | 2 | 3 |
3. | 3 | 1 | 2 |
4. | 2 | 1 | 3 |
The group that has hydride formed by only one member is -
1. 6
2. 7
3. 8
4. 9
A water softening reagent among the following is -
1.
2.
3.
4.
Hydrogen adsorbed on palladium is known as:
1. Atomic H
2. Nascent H
3. Occluded H
4. Heavy H
Dihydrogen gas cannot be prepared with-
1. Cu + HCl (dil.)
2. Fe + H2SO4
3. Mg + steam
4. Na + alcohol
The correct order of increasing reducing nature is -
1. NaH > H2O < MgH2
2. > > NaH
3. < < NaH
4. < NaH
The correct order of increasing electrical conductance is -
1. BeH2 > CaH2 > TiH2
2. BeH2 < CaH2 > TiH2
3. TiH2 < BeH2 < CaH2
4. BeH2 < CaH2 < TiH2
The correct classification of H2O, B2H6, and NaH respectively is-
1. Covalent, Covalent, & Covalent.
2. Covalent, Covalent, & Ionic.
3. Covalent, Ionic, & Covalent.
4. Interstitial, Covalent, & Covalent.
acts as a -
1. Bleaching agent
2. Oxidising agent
3. Oxidant for a rocket fuel
4. All of the above