Identify the correct statements from the following:
| (a) | \(\mathrm{CO}_2(\mathrm{~g})\) is used as a refrigerant ice cream and frozen food. |
| (b) | The structure of \(\mathrm{C}_{60} \) customs12 six carbon rings and 25 five carbon rings |
| (c) | ZSM-5, a type of zeolite, is used to convert alcohol into gasoline. |
| (d) | CO is a colorless and odorless gas. |
| 1. | (a) and (c) only | 2. | (b) and (c) only |
| 3. | (c) and (d) only | 4. | (a), (c) and (d) only |
Which of the following alkenes, on ozonolysis, yields methanal (HCHO) as one of the products?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
| 1. | sec-Butyl alcohol | 2. | tert-Butyl alcohol |
| 3. | iso-Butyl alcohol | 4. | iso-Propyl alcohol |
A mixture of and Ar gases in a cylinder contains 7 g of and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of is:
[Use atomic masses (in g ): N=14, Ar=40]
1. 12 bar
2. 15 bar
3. 18 bar
4. 9 bar
Find the quantity that increases when the concentration of reactants in a reaction is increased.
| 1. | Heat of reaction | 2. | Threshold energy |
| 3. | Collision frequency | 4. | Activation energy |
Given that the ionic product of is 2 × . The solubility of in 0.1 M NaOH is ;
1. 2 × M
2. 1 × M
3. 1 × M
4. 2 × M
Urea reacts with water to form A which will decompose to form B. B when passed through \(\left(Cu\right)^{2 +}\) (aq), deep blue colour solution C is formed. What is the formula of C from the following?
| 1. | \(\left[Cu \left(NH_{3}\right)_{4}\right]^{2 +}\) | 2. | \(Cu \left(\right. OH \left.\right)_{2}\) |
| 3. | \(CuCO_{3} . Cu (OH)_{2}\) | 4. | \(CuSO_{4}\) |
Identify the incorrect match:
| Name | IUPAC Official Name | ||
| (a) | Unnilunium | (i) | Mendelevium |
| (b) | Unniltrium | (ii) | Lawrecium |
| (c) | Unnilhexium | (iii) | Seaborgium |
| (d) | Unununium | (iv) | Darmstadtium |
| 1. | (b)-(ii) | 2. | (c)-(iii) |
| 3. | (d)-(iv) | 4. | (a)-(i) |
© 2026 GoodEd Technologies Pvt. Ltd.