A given metal crystallizes out with a cubic structure having edge length of 361 pm.If there are four metal atoms in one unit cell ,what is the radius of one atom
Options
(a) […]
In Duma’s method for estimation of nitrogen, 0.25g of an organic compound gave 40 mL of nitrogen collected at 300K temperature and 725 mm pressure.If the aqueous tension at 300 K is 25 mm, the […]
The function of ”Sodium pump” is a biological process operating in each and every cell of all animals.Which of the following biologically important ions is also a consituent of this pump:
Options
(a) […]
Solubility of the alkaline earth’s metal sulphates in water decreases in the sequence
Options
(a) Ca > Sr > Ba > Mg (b) Sr > Ca > Mg > Ba (c) Ba > […]
If the value of an equilibrium constant for a particular reaction is 1.6 ˣ 10¹², then at equilibrium the system will contains
Options
(a) mostly reactants (b) mostly products (c) similar amounts of […]
The K(sp) of Ag₂CrO₄, AgCl,AgBr and AgI are respectively. 1.1 ˣ 10⁻¹²,1.8 ˣ 10⁻¹⁰, 5.0 ˣ 10⁻¹³,8.3 ˣ 10⁻¹⁷.Which one of the following salts will precipitate last if AgNO₃ solution is added to the solution […]
Which of the following species contains equal number of σ- and π-bonds
Options
(a) XeO₄ (b) (CN)₂ (c) CH₂(CN)₂ (d) HCO₃⁻
Correct Answer:
XeO₄
Explanation:
No explanation available. Be the first to write […]
Maximum bond angle at nitrogen is present in which of the following
Options
(a) NO₂⁻ (b) NO₂⁺ (c) NO₃⁻ (d) NO₂
Correct Answer:
NO₂⁺
Explanation:
NO₂⁺ has sp hybridisation so it is linear with […]
Which of the following pairs of ions are isoelectronic and isostructural
Options
(a) CIO₃⁻,CO₃²⁻ (b) SO₃²⁻,NO₃⁻ (c) CIO₃⁻,SO₃²⁻ (d) CO₃²⁻,SO₃²⁻
Correct Answer:
CIO₃⁻,SO₃²⁻
Explanation:
ClO₃⁻ and SO₃⁻ ² both have same number of electrons […]
The correct bond order in the following species is
Options
(a) O₂²⁺ < O₂⁻ < O₂⁺ (b) O₂⁺ < O₂⁻ < O₂²⁺ (c) O₂⁻ < O₂⁺ < O₂²⁺ (d) O₂²⁺ < O₂⁺ < O₂⁻
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