Elements having same number of nucleons and different number of protons are
Options
(a) isotone (b) positron (c) isotope (d) isobar
Correct Answer:
isobar
Explanation:
No explanation available. Be the first to write […]
Dalton predicted
Options
(a) law of partial pressure (b) law of multiple proportions (c) law of diffusion (d) law of conservation of mass
Correct Answer:
law of conservation of mass
Explanation:
No explanation […]
A bivalent metal has the equivalent weight of 12. The molecular weight of its oxide will be
Options
(a) 36 (b) 24 (c) 40 (d) 32
Correct Answer:
40
Explanation:
No explanation available. […]
If 300 mL of a gas at 27⁰ C is cooled to 7⁰C at constant pressure, its final volume will be
Options
(a) 350 mL (b) 540 mL (c) 135 mL (d) 280 […]
Metallic crystalline solids have
Options
(a) low melting and boiling point (b) are bad conductors (c) are good conductors of heat and electricity (d) only conduct heat
Correct Answer:
are good conductors of […]
Dynamite contains
Options
(a) H₂SO₄ (b) saw dust (c) both of these (d) none of these
Correct Answer:
saw dust
Explanation:
Dynamite these days is prepared by absorbing the nitroglycerine in sawdust and […]
Which of the following amino acids is basic in nature
Options
(a) Serine (b) Glutamine (c) Arginine (d) none of these
Correct Answer:
Arginine
Explanation:
No explanation available. Be the first to write […]
Enzymes actually
Options
(a) are biological catalysts (b) are biochemical enhancers (c) decrease rate of reaction (d) increase activation energy
Correct Answer:
are biological catalysts
Explanation:
No explanation available. Be the first to […]
Best method to form aromatic iodide is
Options
(a) ArN₂⁺ + HI → (b) RNH₂ + I₂ → (c) ArN₂⁺ + KI → (d) ArN₂⁺ + PI₃ →
Correct Answer:
ArN₂⁺ + KI […]
The bad smelling substance, formed by the action of alcoholic caustic potash on chloroform and aniline, is
Options
(a) nitrobenzene (b) phenyl isocyanate (c) phenyl isocyanide (d) phenyl cyanide
Correct Answer:
phenyl isocyanide
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