IIT JEE 2012 ANALYSIS & Question Paper:
IIT JEE is one of the toughest examinations in the world. In the year 2012 this exam was conducted in two parts, first was PAPER-1 and second was PAPER-2. There were 20 questions of each subject in a paper and each paper consists of 60 questions in total. Paper-1 was of 210 marks and Paper-2 was of 198 marks. This whole booklet is very useful from exam point of view. This booklet consists of three different parts.
- Importance of chapters.
- Type of questions asked.
- Trend of the papers.
Qu. The total number of ways in which 5 balls of different colours can be distributed among 3 persons so that each person gets at least one ball is:
(A) 75 (B) 150
(C) 210 (D) 243
Qu. The function f: [0, 3] → [1, 29], defined by f(x) = 2x3 – 15x2 + 36x + 1, is:
(A) one–one and onto (B) onto but not one–one
(C) one–one but not onto (D) neither one–one nor onto
Qu. A person blows into open-end of a long pipe. As a result, a high pressure pulse of air travels down the pipe. When this pulse reaches the other end of the pipe,
(A) A high-pressure pulse starts travelling up the pipe, if the other end of the pipe is open.
(B) A low-pressure pulse starts travelling up the pipe, if the other end of the pipe is open.
(C) A low-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.
(D) A high-pressure pulse starts travelling up the pipe, if the other end of the pipe is closed.
Ans. (B, D)
Qu. A student is performing the experiment of resonance Column. The diameter of the column tube is 4 cm. The frequency of the tuning fork is 512 Hz. The air temperature is 38°C in which the speed of sound is 336 m/s. The zero of the meter scale coincides with the top end of the Resonance Column tube. When the first resonance occurs, the reading of the water level in the column is
(A) 14.0 cm (B) 15.2 cm
(C) 16.4 cm (D) 17.6 cm
Qu. The carboxyl functional group (–COOH) is present in
(A) picric acid (B) barbituric acid
(C) Ascorbic acid (D) aspirin
Qu. Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?
(A) HNO3, NO, NH4Cl, N2 (B) HNO3, NO, N2, NH4Cl
(C) HNO3, NH4Cl, NO, N2 (D) NO, HNO3, NH4Cl, N2
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