Which of the following elements is very essential for the uptake and utilisation of Ca²⁺ and membrane function?
Options
(a) Phosphorus (b) Molybdenum (c) Copper (d) Boron
Correct Answer:
Boron
Explanation:
No explanation […]
The hybridization of oxygen atom in H₂O₂ is
Options
(a) sp³d (b) sp (c) sp² (d) sp³
Correct Answer:
sp³
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which of the following is redox reaction
Options
(a) 2CuSO₄ + 4KI → Cu₂I₂ + 2K₂SO₄ + I₂ (b) SO₂ + H₂O → H₂SO₃ (c) Na₂SO₄ + BaCl₂ → [Cu(NH₃)₄]SO₄ (d) CuSO₄ + […]
Among the metals Cr,Fe,Mn,Ti,Ba and Mg, the one that cannot be obtained by reduction of its metal oxide by aluminium is
Options
(a) Cr (b) Fe (c) Mg (d) Ba
Correct Answer:
Mg
Explanation: […]
Which one of the following is a false statement
Options
(a) Cell fluid is an example of sol (b) Butter is an example of gel (c) Cheese is an example of emulsion (d) […]
If the initial concentration of the reactant is doubled, the time for half reaction is also doubled. Then the order of the reaction is
Options
(a) zero (b) fraction (c) three (d) one
For which one of the following minerals, the composition given is incorrect
Options
(a) Glauber’s salt – Na₂SO₄.10H₂O (b) Borax – Na₂B₄O₇.7H₂O (c) Carnallite – KCl.MgCl₂.6H₂O (d) soda ash- Na₂CO₃
Correct Answer:
Borax […]
Chloroform gives a trichloro derivative of an alcohol on reaction with
Options
(a) conc. nitric acid (b) aq.alkali (c) acetone and alkali (d) sodium ethoxide
Correct Answer:
acetone and alkali
Explanation:
No explanation […]
The dark blue colour of the solution formed when excess of ammonia is added to a solution of copper (II) sulphate is due to the presence of the ion
Options
(a) [Cu(OH)₄(H₂O)₂]²⁻ (b) […]
Which one of the following is tridentate ligand
Options
(a) NO₂⁻ (b) Oxalate ion (c) glycinate ion (d) Dien
Correct Answer:
Dien
Explanation:
No explanation available. Be the first to write the explanation […]
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