A compound among the following that is not a monomer for a high molecular mass silicone polymer is-
1.
2.
3.
4.
Aluminium reacts with concentrated HCl and concentrated NaOH to liberate which of the following gases respectively-
1. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{H}_2 \) | 2. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{O}_2 \) |
3. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{H}_2 \) | 4. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{O}_2 \) |
The basic structural unit of silicates is-
1. | \( \mathrm{SiO}_4{}^{4-}\) | 2. | \(\left(\mathrm{SiO}_3\right)^{2-} \) |
3. | \(\mathrm{SiO}_4{ }^{2-} \) | 4. | \(\mathrm{SiO}^{-}\) |
When silicon is boiled with caustic soda solution, the gas is evolved is-
1.
2.
3.
4. None of the above
An anion that cannot be formed by Boron is -
1.
2.
3.
4.
A compound among the following that is used in cosmetic surgery is -
1. | Silica | 2. | Silicates |
3. | Silicones | 4. | Zeolites |
Identify the correct statements among the following:
a. is used as a refrigerant for ice-cream and frozen food.
b. The structure of contains twelve six-carbon rings and twenty five-carbon rings.
c. ZSM-5, a type of zeolite, is used to convert alcohol into gasoline.
d. CO is a colourless and odourless gas
1. (a) and (c) only
2. (b) and (c) only
3. (c) and (d) only
4. (a), (b) and (c) only
The reason behind carbon showing catenation property but lead does not is:
1. Due to the smaller size of C than that of Pb
2. Due to the smaller size of Pb than that of C
3. Due to the smaller ionization energy of C than that of Pb
4. Due to the inert pair effect
can't be prepared by -
1.
2.
3.
4.
\(\mathrm{Al}_2 \mathrm{O}_3\) reacts with-
1. | Only water | 2. | Only acids |
3. | Only alkalis | 4. | Both acids and alkalis |