The properties of water which make it useful as a solvent is/are -
1. A high value of dielectric constant
2. A high value of dipole moment
3. A high value of lattice energy
4. Both '1' and '2'
D2O cannot be used for drinking purposes, because -
1. it increases the rate of catabolic reactions
2. it slows the rate of anabolic and catabolic reactions
3. it slows the rate of anabolic reactions.
4. it increases the rate of a reaction.
Saline hydrides can remove traces of water from organic compounds because :
1. | They react with water to form a metal hydroxide along with the liberation of oxygen gas. |
2. | They react with water to form a metal hydroxide along with the liberation of hydrogen gas. |
3. | They react with water to form a metal carbonate along with the liberation of oxygen gas. |
4. | They react with water to form a metal carbonate along with the liberation of hydrogen gas. |
H2O2 behave as a bleaching agent because :
1. | It acts as a strong oxidizing agent both in acidic and basic media. |
2. | It acts as a strong reducing agent both in acidic and basic media. |
3. | It acts as a strong oxidizing agent only in neutral media. |
4. | It acts as a strong reducing agent only in neutral media. |
A colourless liquid 'A' contains H and O elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light. The chemical equation for its decomposition reaction in light is-
1.
2.
3.
4.
The catalyst used to increase the production of H2 , by ‘coal gasification' process is -
1. Copper
2. FeCr2O4 (iron chromate)
3. Pd/C
4. None of the above.
Hydrogen is placed separately in the periodic table because :
1. It resembles alkali metals.
2. It shows the same reactions as halogens.
3. Both (1) and (2)
4. None of the above.
NH3 is an example of :
1. Electron rich hydride
2. Electron-precise hydride
3. Electron deficient hydride
4. None of the above
Incorrect statement regarding structure of H2O and H2O2 is:
1. In gaseous phase, water molecule has a bent form.
2. Bond angle of water is
3. Hydrogen peroxide has a non-planar structure.
4. The dihedral angle of H2O2 in gas phase is 111.5°
The reaction that is not an example of a hydrolysis reaction is-
1.
2.
3.
4.