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An organic compound [A], molecular formula

An organic compound [A], molecular formula C10H20O2 was hydrolyzed with dilute sulphuric acid to give a carboxylic acid [B] and an alcohol [C].... View Article

The atomic number of the element unnilennium is

Option are1) 1092) 1023) 1194) 108Solution: (1) Unnilennium 109... View Article

The electronic spectrum of [Ti(H₂O)₆]³⁺ shows a single broad peak with a maximum at 20,300 cm^-1. The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol^-1, is:

(1 kJ mol-1 = 83.7 cm-1)1) 83.72) 242.53) 145.54) 97Solution: (4) [Ti(H2O)6]3+ Ti3+ 3d1 in the octahedral field of ligand. CFSE = –0.4 Δ0CFSE =... View Article

Henry’s constant (in kbar) for four gases

Henry’s constant (in kbar) for four gases ɑ, β, , and in water at 298 K is given below:ɑβ KH5022 x 10-50.5(density of water = 103 kg m-3 at... View Article

Thermal power plants can lead to

1) Ozone layer depletion2) Blue baby syndrome3) Eutrophication4) Acid rainSolution: (4) Refer environmental chemistryIt emits CO2 that combines... View Article

Glycerol is separated in soap industries by:

1) Fractional distillation2) Distillation under reduced pressure3) Differential extraction4) Steam distillationSolution: (2) conceptualGlycerol... View Article

Of the species, NO, NO⁺, NO²⁺ and NO^–, the one with minimum bond strength is:

1) NO– 2) NO+3) NO2+ 4) NOSolution: (1) B.O. NO– = 2BO NO+ = 3BO NO2+ = 2.5BO NO = 2.5B.O ∝ 1/[B.L]... View Article

Which of the following compounds produces an optically inactive compound on

Which of the following compounds produces an optically inactive compound on hydrogenation? Solution: (3)... View Article

The antifertility drug “Novestrol” can react with:

1) Br2 / water; ZnCl2 / HCl; FeCl3 2) Br2 / water; ZnCl2 / HCl; NaOCl3) Alcoholic HCN; NaOCl; ZnCl2 / HCl4) ZnCl2 / HCl; FeCl3; Alcoholic... View Article

Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is

1) N2O3 2) N2 3) N2O54) NOSolution: (4)... View Article

Which one of the following compounds possesses the most acidic hydrogen?

Which one of the following compounds possesses the most acidic hydrogen? Solution: (3) has most acidic hydrogen among given compounds, this is... View Article

The complex that can show optical activity is

1) cis– [CrCl2 (ox)2]3- (ox - oxalate)2) trans – [Fe (NH3)2 (CN)4]- 3) trans – [Cr (Cl2) (ox)2]3- 4) cis– [Fe (NH3)2 (CN)4]-Solution: (1) cis–... View Article

If the boiling point of H₂O is 373 K, the boiling point of H₂S will be

1) greater than 300 K but less than 373 K2) equal to 373 K3) more than 373 K4) less than 300 KSolution: (4) Less than 300 K... View Article

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?1) (a), (c) and (d)2) (b) and (c)3) (c) and (d)4)... View Article

An acidic buffer is obtained on mixing

1) 100 mL of 0.1 M HCl and 200 mL of 0.1 M CH3COONa 2) 100 mL of 0.1 M HCl and 200 mL of 0.1 M NaCl 3) 100 mL of 0.1 M CH3 COOH and 100 mL of... View Article

The total number of numbers, lying between 100 and 1000 that can be formed with the digits 1, 2, 3, 4,5, if the repetition of digits is not allowed and numbers are divisible by either 3 or 5 is

The numbers either divisible by either 3 or 5 are... View Article

Let a = i + 2 j – k, b = i – j and c = i – j – k be three given vectors.

Question: Let is equal to _______Solution:... View Article

If the system of equations:kx + y + 2z = 1,3x – y – 2z = 2 and -2x – 2y – 4z = 3 has infinitely many solutions, then k is equal to __________

D = D1 = D2 = D3 = 0 Choose D2 = 0 k(–8+6)–1(–12–4)+2(9+4)=0 –2k + 16 + 26 = 0 2k = 42 k = 21... View Article

Let f(x) be a polynomial of degree 6 in x, in which the coefficient of x⁶ is unity and it has extrema at x = –1 and x = 1. If [latex]lim_{x to 0}frac{f(x)}{x^3}=1[/latex], then 5.f(2) is equal to

f(x) = x6 + ax5 + bx4 + x3f’(x) = 6x5 + 5ax4 + 4bx3 + 3x2Roots 1 & – 1Therefore, 6 + 5a + 4b + 3 = 0 & – 6 + 5a –... View Article

The locus of the point of intersection of the lines (√3)kx + ky – 4√3 = 0 and √3x – y – 4√3 k = 0 is a conic, whose eccentricity is _________.

Solution: (√3)kx + ky - 4√3 = 0 ...(1)√3kx -ky= 4√3 k2 ...(2)Adding equation (1) & (2)2√3 kx = 4√3(k^2 +... View Article