chemistry MCQs – Page 67

Practise multiple-choice questions from chemistry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemistry Mcqs
1321. For the reaction 2HI ____________> H2+ I2
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A. Kc > kp

B. Kp= kc

C. Kp > kc

D. Kp ? kc

1322. Who discovered carbohydrates fats and proteins?
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A. William Prout

B. Jons Jacob Berzelius

C. Walter Bradford Cannon

D. Anselme Payen

1323. In whole Periodic Table which element Is Most Reducing Agent ?
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A. Chlorine

B. lithium

C. Neon

D. Helium

1324. One Water molecule can form maximum ______hydrogen bonds.
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A. None

B. 2

C. 3

D. 4
1325. The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______?
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A. 7.5gm

B. 0.065gm

C. 0.65gm

D. 6.5gm

1326. If volumetric analysis methyl orange indicator is used when_________?
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A. Acid is strong

B. Acid is strong base is weak

C. Bade is strong

D. Acid is weak

1327. The bond energy of Hydrogen molecule is__________?
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A. 104Kcal/mol

B. 106Kcal/mol

C. 110Kcal/mol

D. 150KJcal/mol

1328. Compound containing two halogen atoms on two adjacent carbon atoms are called as ___________?
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A. Geminal dihalides

B. Vicinal dihalides

C. Glycols

D. Diols

1329. The quantity of petrol can be increased by ___________?
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A. Induction fueling

B. Refining

C. Reforming

D. Cracking
1330. In borax bead test which compound is formed_________?
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A. Meta borate

B. Tetra borate

C. Double oxide

D. Ortho burate

1331. which Compound Destroy The OZONE ?
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A. CFCs

B. CH3COOH

C. BOTH A & B

D. None Of These

1332. The Ionization energy of Hydrogen is __________?
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A. 12.54ev

B. 13.6ev

C. 10.54ev

D. 17.56ev

1333. The method in which more steam is passed through the water Gas to oxidize CO to Carbon Dioxide which is then more soluble in water than Hydrogen gas and gets separated is called______.
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A. Bosch Process

B. liquification process

C. Thermal decomposition

D. Fragmentation

1334. Percentage of lead in lead pencil is________?
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A. 20

B. 70

C. Zero

D. 80

1335. Z number for chlorine is __________?
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A. 35.5

B. 15

C. 21

D. 17
1336. One fathom is equal to:__________?
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A. 6 meters

B. 6 feet

C. 100 cm

D. 60 feet

1337. When Ammonia is used as a refrigerant in vapour compression cycle?
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A. Cu Tubing used

B. Steel tubes used

C. Both a & b

D. Material does not effect by refrigerant

1338. Molecular orbital Theory is also called_________?
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A. Antibondingtheory

B. and ? bonding theory

C. Bonding theory

D. Band theory

1339. During Electrolysis of Water the product @cathode obtained is ___________?
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A. Hydrogen & Carbon monoxide

B. Oxygen Gas & Water

C. Hydrogen Gas & Water

D. CO & Water

1340. Atomic mass of an atom is present in the __________?
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A. Shell

B. Nucleus

C. Orbit

D. Orbital