A compound that is sparingly soluble in cold water and fairly soluble in hot water is-
1.
2.
3.
4.
Sn crumbles to a powder in very cold weather, due to –
1. Expansion of the crystal lattice
2. Formation of SnO at low temperature
3. The conversion of Sn to powdery meta stannic acid
4. The transition from white tin to grey form, that is amorphous
on hydrolysis gives -
1.
2.
3.
4.
is an ionic carbide. It is also known as :
1. Acetylide
2. Methanide
3. Allyide
4. Alloy
Hydrated aluminium chloride is an ionic compound and soluble in water giving -
1. Al3+ and Cl- ions
2. and Cl- ions
3. and ions
4. None of the above
The incorrect statement among the following is -
1. is more stable than
2. is less stable than but is more stable than
3. is less stable than
4. Pb(II) is a good reducing agent while Sn(II) is not
The incorrect statement among the following is:
1. SnF4 is ionic in nature.
2. PbF4 is covalent in nature.
3. SiCl4 is easily hydrolysed.
4. GeX4 (X = F, Cl, Br, I) is more stable than GeX2
Al2O3 can be converted to anhydrous AlCl3 by heating:
1.
2. with NaCl in solid-state
3. a mixture of and carbon in dry gas
4. with gas
The stability of the +1 oxidation state increases in the sequence:
1. Al <Ga<In<Tl
2. Tl<In<Ga<Al
3. In<Tl<Ga<Al
4. Ga<In<Al<Tl
1. | Sheet silicate | 2. | Pyrosilicate |
3. | Three dimensional silicate | 4. | Linear chain silicate |