In the following reaction,
\(\mathrm{ CH_{3}C\equiv CH\xrightarrow[Red \ hot \ iron \ tube]{873 K} \ A}\)
The number of () bonds present in the product (A) is:
| 1. | 21 | 2. | 9 |
| 3. | 24 | 4. | 18 |
Match the oxide given in Column-I with its property given in Column-II:
| Column-I | Column-II | ||
| (i) | (a) | Neutral | |
| (ii) | (b) | Basic | |
| (iii) | (c) | Acidic | |
| (iv) | (d) | Amphoteric |
Which of the following options is correct?
| (i) | (ii) | (iii) | (iv) | |
| 1. | (b) | (a) | (d) | (c) |
| 2. | (c) | (b) | (a) | (d) |
| 3. | (a) | (d) | (b) | (c) |
| 4. | (b) | (d) | (a) | (c) |
A first-order reaction has a rate constant of 2.303 × 10¯3 s¯1. The time required for 40 g of this reactant to reduce to 10 g will be
[Given that ]
| 1. | 230.3 s | 2. | 301 s |
| 3. | 2000 s | 4. | 602 s |
and trans-cyclopenta-1,2-diol?
Which of the following is produced when the vapours of secondary alcohol are passed over heated copper at 573 K?
| 1. | A carboxylic acid | 2. | An aldehyde |
| 3. | A ketone | 4. | An alkene |
A compound "X", upon reaction with H2O, produces a colourless gas "Y" with a rotten fish smell. Gas 'Y' is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. The compound 'X' will be:
1. Ca3P2
2.
3.
4. Ca3(PO4)2
The correct statement regarding a solution of two components A and B exhibiting positive deviation from ideal behaviour is :
| 1. | Intermolecular attractive force between A-A and B-B are stronger than those between A-B |
| 2. | ∆mixH = 0 at constant T and P |
| 3. | ∆mixV = 0 at constant T and P |
| 4. | Intermolecular attractive forces between A-A and B-B are equal to those between A-B |
© 2026 GoodEd Technologies Pvt. Ltd.