| Q. 8 | 50 ml of a mixture of NH3 and H2 was completely decomposed by sparking into nitrogen and hydrogen. 40 ml of oxygen was added and the mixture was sparked again. After cooling to the room temperature, the mixture was shaken with alkaline pyrogallol solution and a contraction of 6 ml was observed, the percentage by volume of NH3 in the original mixture is | |||
| 1. | 36% | |||
| 2. | 68% | |||
| 3. | 72% | |||
| 4. | 28% | |||
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| Q. 9 | If S0 , S1
, S2 and S3 are solubilities of AgI, in
water, 0.01 M NaI, 0.05 M AgNO3 and 0.01 M
NH3 solution respectively then |
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| 1. | S3 >
S0 > S1 > S2 |
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| 2. | S0 >
S3 > S1 > S2 |
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| 3. | S3 >
S2 > S1 > S0 |
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| 4. | S0 > S1 > S2 > S3 | |||
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| Q. 10 | SECTION - II Assertion - Reason Type This section contains 1 question numbered 10. Each question contains statement-1 (Assertion) and Statement-2 (Reason). Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. STATEMENT-1 : Hydrolysis of  occurs much faster than other primary
alkyl halide.because STATEMENT-2 : Hydrolysis of primary alkyl halide generally takes place more favourably through SN2 mechanism. |
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| 1. | Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1 | |||
| 2. | Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1 | |||
| 3. | Statement-1 is True, Statement-2 is False | |||
| 4. | Statement-1 is False, Statement-2 is True | |||
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| Q. 11 | SECTION - III Linked comprehension Type This section contains 1 paragraphs C11. Based upon each paragraph, 1 multiple choice question have to be answered. Each question has 4 choices (1), (2), (3) and (4), out of which ONLY ONE is correct. C11 : Paragraph for Question No. 11 Aldehydes are easily oxidised to carboxylic acid but ketones are not. Aldehydes are oxidised not only by the same reagents, which oxidises primary or secondary alcohols (like acidified KMnO4 , K2Cr2O7) but oxidised by mild oxidising agent like Tollen's reagents, Fehling solution and Benedict's solution. Aldehydes are very easily oxidised and thus are powerful reducing agent.  -hydroxy ketones readily reduce Tollen's
reagent and Fehling's solution.Methyl ketones can be conveniently oxidised by hypohalides in the haloform reactions. Question: Which of the following give iodoform test with NaOH + I2 ?  |
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| 1. | C and D | |||
| 2. | A, B, C and D | |||
| 3. | A and B | |||
| 4. | A, C and D | |||
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| Q. 12 | SECTION-IV Matrix-Match Type This section contains 1 question. Each question contains statements given in two columns which have to be matched. Statements (A, B, C, D) in Column I have to be matched with statements (p, q, r, s) in Column II. Match the following
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| Ans : |
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