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nikhil04

@nikhil04

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Joined: Aug 19, 2020
Last seen: Jan 13, 2022

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Answer to: Which of the following oxoacid of sulphur has – O – O – linkage?

Correct answer: (1) H2SO4, sulphuric acid

5 years ago

Forum

Chemistry

Answer to: The correct option for free expansion of an ideal gas under adiabatic condition is

Correct answer: (4) q = 0, ΔT = 0 and w = 0

5 years ago

Forum

Chemistry

Answer to: Identify the correct statements from the following : (a) CO2(g) is used as refrigerant for ice-cream and frozen food.

Correct option: (3) (c) and (d) only

5 years ago

Forum

Chemistry

Answer to: Which of the following is a natural polymer?

Correct answer: (4) cis-1, 4-polyisoprene

5 years ago

Forum

Chemistry

Answer to: Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :

Correct answer: (2) Tert. butyl alcohol

5 years ago

Forum

Chemistry

Answer to: The rate constant for a first order reaction is 4.606 × 10^–3 s^–1. The time required to reduce 2.0 g of the reactant to 0.2 g is :

Correct answer: (2) 500 s

5 years ago

Forum

Chemistry

Answer to: An alkene on ozonolysis gives methanal as one of the products. Its structure is

Correct answer: (2)

5 years ago

Forum

Chemistry

Answer to: The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.

Correct option: (3) Potassium

5 years ago

Forum

Chemistry

Answer to: Which of the following set of molecules will have zero dipole moment?

Correct option: (3) Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene

5 years ago

Forum

Chemistry

Answer to: The calculated spin only magnetic moment of Cr^2+ ion is

Correct answer: (1) 4.90 BM

5 years ago

Forum

Chemistry

Answer to: Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

Correct answer: (4) SCN-< F-< C2O42-< CN-

5 years ago

Forum

Chemistry

Answer to: For the reaction, 2Cl(g) → Cl2(g), the correct option is

Correct answer: (3) Δr H < 0 and Δr S < 0

5 years ago

Forum

Chemistry

Answer to: Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2 × 10^–15

Correct answer: (4) 2 × 10–13 M

5 years ago

Forum

Chemistry

Answer to: HCl was passed through a solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)?

Correct answer: (1) Only NaCl

5 years ago

Forum

Chemistry

Answer to: An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is

Correct answer: (4) √3/4 x 288 pm

5 years ago

Forum

Chemistry

Answer to: The number of Faradays(F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol^–1) is

Correct answer: (4) 1

5 years ago

Forum

Chemistry

Answer to: Elimination reaction of 2-Bromo-pentane to form pent-2-ene is

Correct option: (4) (a), (b), (c)

5 years ago

Forum

Chemistry

Answer to: Sucrose on hydrolysis gives (1) α-D-Glucose + β-D-Glucose (2) α-D-Glucose + β-D-Fructose

Correct answer: (2) α-D-Glucose + β-D-Fructose

5 years ago

Forum

Chemistry

Answer to: Match the following columns and select the correct option. Column-I Column-II (a) Placenta - (i) Androgens

Correct answer: (3) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

5 years ago

Forum

Biology

Answer to: The sequence that controls the copy number of the linked DNA in the vector, is termed

Forum

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