RankLab
Back to Questions
MathsMediumMCQ2024 ยท 09 Apr Shift 2

Q64.The sum of the coefficient of x2/3 and xโˆ’2/5 in the binomial expansion of (x2/3 + 12 xโˆ’2/5) 9 (1) 21/4 (2) 63/16 (3) 19/4 (4) 69/16

What This Question Tests

This question tests the ability to find specific terms in a binomial expansion by setting the power of x in the general term to the required values and then calculating the sum of their coefficients.

Concepts Tested

Binomial theorem for positive integer indexGeneral term in binomial expansion

Formulas Used

T_{r+1} = nCr * a^(n-r) * b^r

๐Ÿ“š NCERT Sections This Tests

12.5 โ€” A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,

Physics Class 12 ยท Chapter 12

71% match

12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.

5.28 โ€” How Many Ions Are Produced From The Complex Co(Nh3)6Cl2 In Solution?

Chemistry Class 11 ยท Chapter 5

70% match

5.28 How many ions are produced from the complex Co(NH3)6Cl2 in solution? (i) 6 (ii) 4 (iii) 3 (iv) 2 139 Coordination Compounds Reprint 2025-26

1.3 โ€” Define The Following Terms:

Chemistry Class 11 ยท Chapter 1

70% match

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