Last seen: Mar 10, 2022
Correct answer: (3) two points Explanation: f(x) = |(x-3)(x+1)|.e(3x-2)2 f(x) = (x-3)(x+1).e(3x-2)2; x ∈ (3, ∞) f(x) = -(x-3)(x+1).e(3x-2)2; x...
Correct answer: (3) 5 Explanation: = = 5(8)2 - 6.8cos 60° = (∵ ⇒ ) 40 - ⇒ = 0 = -8, = 5
From Arrhenius equation, we obtain log = It is given that, k2 = 4k1 T1 = 293 K T2 = 313 K Therefore, log = ⇒ 0.6021 = ⇒ Ea = =...
Arrhenius equation, we know that, log = Also, k1 = 4.5 × 103 s-1 T1 = 273 + 10 = 283 K k2 = 1.5 × 104 s-1 Ea = 60 kJ mol-1 = 6.0 × 104 J ...
Given, Arrhenius equation is, k = Ae-Ea/RT ⇒ ln k = ln A - ⇒ ln k = log A - ⇒ log k = log A - ....(i) The given equation is log k = 14.34...
Answer: (c) CH3CH2CH2OH Explanation: CH3CH = CH2 CH3CH2CH2OH
Answer is (d) 2-bromo-2-methyl butane Explanation The order of substitution in different alkanes is 3° > 2° > 1° Thus the bromination of ...
Correct answer: (d) Explanation: ← because of steric factor para is major. figure.png
Correct answer: (b) Explanation: figure.png
Correct answer: (b) Step 2 Explanation: Step 1 involves the conversion of sp2 carbon to sp3 carbon (carbon having electrophile E) while step 2 inv...
Correct answer: (b) (I) > (II) > (III) Explanation: Formation of carbocation is r.d.s. figure.png
Correct answer: (4) equals Explanation: dt = , 0 ≤ x ≤ 1 differentiating both the sides = f(x) ⇒ 1 - (f'(x))2 = f2(x) = 1 sin-1 f(x) ...
Correct answer: (1) -23 Explanation: Equation of plane is 3x – 2y + 4z – 7 + λ(x + 5y – 2z + 9) = 0 (3 + λ)x + (5λ – 2)y + (4 – 2λ)z + 9λ – ...
Correct answer: (2) Explanation: S = + + + .... = + + + ....+ = 1 - =
Correct answer: (3) 1 Explanation: Let ex = t > 0 ƒ(t) = t4 + 2t3 – t – 6 = 0 ƒ'(t) = 4t3 + 6t2 – 1 figure.png ƒ"(t) = 12t2 + 12t >...
Correct answer: (3) * = ∧, p = v Explanation: (p ∧ ~q) → (p ∨ q) is tautology. figure.png
Anti knocking agent.
Correct answer: (b) Methyl Iso-Cyanate Explanation: In the textbook we came across, Three Mile Island and Chernobyl disasters associated with acci...
Correct answer: (a) Their pigments Explanation: Algal blooms impart a distinct colour to water due to their pigments.