Which of the following pairs has the same size
Which of the following pairs has the same size
Options
(a) Fe²⁺ , Ni²⁺ (b) Zr⁴⁺ , Ti⁴⁺ (c) Zr⁴⁺ , HF⁴⁺ (d) Zn²⁺ , HF⁴⁺
Correct Answer:
Zr⁴⁺ , HF⁴⁺
Explanation:
No […]
AIPMT2010
At 25⁰ C , the highest osmotic pressure is exhibited by 0.1 M solution of
At 25⁰ C , the highest osmotic pressure is exhibited by 0.1 M solution of
Options
(a) glucose (b) urea (c) CaCl₂ (d) KCl
Correct Answer:
CaCl₂
Explanation:
No explanation available. Be the […]
A particle of mass M is suited at the centre of a spherical shell of same mass and radius
A particle of mass M is suited at the centre of a spherical shell of same mass and radius a. The gravitational potential at a point situated at a/2 distance from the centre, will be: […]
The radii of circular orbits of two satellites A and B of the earth, are 4R and R
The radii of circular orbits of two satellites A and B of the earth, are 4R and R respectively. If the speed of satellite A is 3 V, then the speed of satellite B will […]
Which of the following reactions will not result in the formation of carbon
Which of the following reactions will not result in the formation of carbon-carbon bonds
Options
(a) Reimer-Tiemann reaction (b) Cannizzaro reaction (c) Wurtz reaction (d) Friedel-crafts acylation
Correct Answer:
Cannizzaro reaction
Explanation:
No […]
Which of the following statements about primary amines is false
Which of the following statements about primary amines is false
Options
(a) Alkyl amines are stronger bases than aryl amines (b) Alkyl amines react with nitrous acid to produce alcohols (c) Aryl amines […]
Give cyclohexanol(I), acetic acid (II), 2,4,6-trinitrophenol(III),and phenol(IV)
Give cyclohexanol(I), acetic acid (II), 2,4,6-trinitrophenol(III), and phenol(IV).In these the order of decreasing acidic character will be
Options
(a) III > II > IV > I (b) II > III > I > […]
AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal
AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is
Options
(a) 335 pm (b) 250 […]
Crystal field stabilization energy for high spin d⁴ octahedral complex is
Crystal field stabilization energy for high spin d⁴ octahedral complex is
Options
(a) -1.8 Δ₀ (b) -1.6 Δ₀ + P (c) -1.2 Δ₀ (d) -0.6 Δ₀
Correct Answer:
-0.6 Δ₀
Explanation:
No explanation […]
An increase in equivalent conductance of a strong electrolyte
An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to
Options
(a) increase in ionic mobility of ions (b) 100% ionisation of electrolyte at normal dilution (c) increase […]