RankLab
Back to Questions
MathsHardMCQ2022 Β· 29 Jun Shift 1

Q63.If the constant term in the expansion of (3x3 βˆ’2x2 + x5 ) is 2k. l, where l is an odd integer, then the value of k is equal to (1) 6 (2) 7 (3) 8 (4) 9

What This Question Tests

This question involves solving a second-order non-homogeneous linear recurrence relation and then finding the sum of an infinite series generated by the terms of that sequence.

Concepts Tested

Solving linear recurrence relationsSum of infinite seriesGeometric series

Formulas Used

an+2 = 2an+1 βˆ’an + 1

S = a / (1-r)

πŸ“š NCERT Sections This Tests

2.9 β€” The Resistance Of A Conductivity Cell Containing 0.001M Kcl Solution At 298

Chemistry Class 11 Β· Chapter 2

70% match

2.9 The resistance of a conductivity cell containing 0.001M KCl solution at 298 K is 1500 W. What is the cell constant if conductivity of 0.001M KCl solution at 298 K is 0.146 Γ— 10–3 S cm–1. 59 Electrochemistry Reprint 2025-26

1.3 β€” Define The Following Terms:

Chemistry Class 11 Β· Chapter 1

70% match

1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.

3.23 β€” The Rate Constant For The Decomposition Of Hydrocarbons Is 2.418 Γ— 10–5S–1

Chemistry Class 11 Β· Chapter 3

70% match

3.23 The rate constant for the decomposition of hydrocarbons is 2.418 Γ— 10–5s–1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of pre-exponential factor.