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The compounds C2H5OC2H5 and CH3OCH2CH2CH3 are:

(A) Metamers. (B) Chain isomers. (C) Geometrical isomers. (D) Conformational isomerism. The Correct Answer is (A) Metamers. Solution: The... View Article

The thermal decomposition of Acetaldehyde (CH3CHO) occurs as : CH3CHO → CH4 + CO. The kinetic data of the thermal decomposition is given below. The rate expression thus can be given as:

The kinetic data of the thermal decomposition. (CH3CHO)mol.lit-1 Rate(mol.lit-1.sec-1) 1.75 * 10-3... View Article

In which of the following compounds, all the atoms are in one plane in all the possible conformations.

The Correct Answer is Both (B) and (C) Solution: As given in the above options: (A) All the atoms may not lie in the same plane. (B) Due to... View Article

Which of the following is the correct structure of 4-bromo-3-methyl but-1-ene?

(A) (B) (C) (D) The Correct Answer is (C) Explore more such questions and answers at BYJU'S.... View Article

Which of the following order is true about the boiling points of HF, HCl, HBr and HI?

(A) HCl > HF > HBr > Hl (B) HF > HCl > HBr > Hl (C) HI > HBr > HCl > HF (D) HF > HI > HBr > HCl The... View Article

Which of these molecules have non-bonding electron pairs on the central atom?

(A) SF4 (B) SO2 (C) ICL3 (D) All Of These The Correct Answer is (D) All Of These Solution: All three molecules have non-bonding... View Article

SN2 Reactions are

(A) Stereospecific (B) Stereoselective (C) Both (A) and (B) (D) None Of These The Correct Answer is (A) Stereospecific Solution: A... View Article

Conversion of Chlorobenzene to 1-Chloro-4-methylbenzene is

(A) Wurtz reaction (B) Swarts reaction (C) Wurtz-Fittig reaction (D) Friedel-Crafts reaction The Correct Answer is (D) Friedel-Crafts... View Article

Integral x/(x⁴+x² + 1) dx

Solution: Put x2 = t Then 2x dx = dt ∫x/(x4+x2 + 1) dx = ½ ∫dt/[(t+½ )2 + (¾)] = ½... View Article

The value of α for which the equation (α+5)x² – (2α+1)x + (α-1) = 0 has roots equal in magnitude but opposite in sign, is

(a) 7/4 (b) 1 (c) -½ (d) -5 Solution: Given (α+5)x2 - (2α+1)x + (α-1) = 0 has roots equal in magnitude but... View Article

Example of transitive relation

Solution: A relation R on set A is called a transitive relation if (a, b)∈R, (b, c)∈R => (a, c)∈R for all a, b, c ∈ A.... View Article

Lcm of 7, 8, 11, and 12.

Solution: Prime factorisation of 7 = 71 Prime factorisation of 8 = 2×2×2 = 23 Prime factorisation of 11 = 111 Prime... View Article

The pair of equations 5x – 15y = 8 and 3x – 9y = 24/5 has

(a) one solution (b) two solutions (c) infinitely many solutions (d) no solution Solution: Given 5x - 15y = 8 3x - 9y =... View Article

Prove that √6 is an irrational number.

Solution: Assume that √6 is rational. So it can be represented as a fraction. Let the lowest terms representation be √6 = a/b,... View Article

The equation x log x = 3-x has at least one root in the interval

Solution: We will have to draw the graphs of functions y = x logx and y = 3-x. The solution of the equation: x log x = 3-x will be given by the... View Article

What is ⁿP_r formula?

Solution: In nPr, P denotes permutation. This formula gives the number of ways of selecting and arranging r objects from the given n... View Article

How to integrate xe^x?

Solution: We have to find out ∫xex dx. We can make use of integration by parts. Take x = u Let ex = v ∫uv dx = u∫v -... View Article

The maximum value of 3×3 determinant whose elements are 0, 1.

Solution: Let D = = 0 - 1(0-1) + 1(1-0) = 0+1+1 = 2 Hence, the largest value of a third-order determinant whose elements are 0 or 1 is 2.... View Article

Evaluate 1211.04 root

Solution: We find the square root of 1211.04 using the long division method. Step 1: Place a bar over every pair of digits starting from the... View Article

Suppose x₁ and x₂ are the point of maximum and the point of minimum respectively of the function f(x) = 2x³ – 9ax² + 12a²x + 1 respectively, (a>0) then for the equality x₁² = x₂ to be true the value of a must be

(a) 0 (b) 2 (c) 1 (d) 1/4 Solution: Given f(x) = 2x3 - 9ax2 + 12a2x + 1 f’(x) = 0 => 6x2 - 18ax + 12a2 = 0 => x2 - 3ax... View Article

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