chemistry Mcqs
1301. Atom is the smallest particall which is_________?
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A. Divisible

B. Non of these

C. Both

D. Indivisible
1302. Which of the following element has the maximum electron affinity_____?
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A. Br

B. I

C. Cl

D. F

1303. Reading of a Barometer going down is an indication of:___________?
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A. Storm

B. Intense heat

C. Snow

D. Rainfall
1304. When SO2 solution is passed over which of the following it turns green?
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A. SO3

B. K2Cr2O7

C. P2O5

D. H2SO4

1305. Marsh gas is _________?
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A. Methane

B. Hydrogen

C. Ethane

D. Nitrogen

1306. What are the metal bearing rocks called?
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A. Bauxite

B. Ores

C. Metalloids

D. Bitumen

1307. The quality of petrol is improved by ____________?
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A. Cracking

B. Reforming

C. Refining

D. Hydration

1308. An acid-Base Reaction is always a/an __________?
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A. Endothermic

B. Fission

C. Fusion

D. Exothermic
1309. Carbon,Diamond and Graphite are together called:___________?
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A. Isotopes

B. Isomers

C. Allotrope

D. Isomorphs

1310. How much solar flux absorb by earths surface is used to drive hydrologic cycle:
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A. 1/5th

B. 1/2sec

C. 1/4th

D. 1/3rd
1311. The shielding Effect across the period __________?
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A. Increases

B. Remains Same

C. Decreases

D. None of them

1312. Which one of the following results in the discovery of proton.
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A. Alpha rays

B. Cathode rays

C. Canal rays

D. X-rays

1313. In SI base units, 1 Bq is equal to __________ ?
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A. 1.5 disintegration per second

B. 0.01 disintegration per second

C. 10 disintegration per second

D. 1 disintegration per second
1314. The Bond Energy of H-F is________?
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A. 281kJ/mol

B. 456kJ/mol

C. 562kJ/mol

D. None

1315. Which of the following can be separated by Sublimation Method?
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A. Sand and Iron Filing

B. Sand and Naphthalene

C. Both A & B

D. None

1316. The only non metal exists in liquid state is ___________?
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A. Phosphorus

B. Iodine

C. Bromine

D. Mercury

1317. The product of the reaction between steam and Hydrocarbon in presence of Ni catalyst at 900C is _____.
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A. CO+O

B. CO+HO

C. CO+H(water gas)

D. Laughing Gas

1318. How many isomeric aldoses are possible for the molecular formula C6H12O6?
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A. 2

B. 7

C. 4

D. 16
1319. In an electrolysis of aqueous Sodium Flouride, the species that moves towards Anode is _________?
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A. HO

B. Sodium

C. Flouride

D. None of them

1320. The hybridization of nitrogen atom in pyridine is_______?
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A. Sp3

B. Sp2

C. It is not hybridized

D. Sp

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

1341. Oxalate ion behaves as a ________ ligand.
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A. Bidentate

B. Hexadentate

C. Tridentate

D. Unidentate

1342. Which of the following is the Radioactive isotope of Hydrogen?
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A. Deuterium

B. Protium

C. Nichromium

D. Tritium
1343. Universe is almost 70% made up of __________?
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A. Hydrogen

B. Chlorine

C. Carbon

D. Helium

1344. Benzene gives mainly_________?
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A. All of these

B. Addition reaction

C. Substitution reactions

D. Halogenation

1345. Barret esophagus is good example of__________?
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A. Dysplasia

B. Metaplasia

C. Atrophy

D. Hyperplasia

E. Hypertrophy

1346. The equation that represents the relationship of Faradays first law of electrolysis is _______?
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A. w=Z/At

B. Z=At

C. Z= At/M

D. w=ZAt
1347. Out of Alkane, Alkene & Alkyne, which one is more acidic?
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A. Alkene

B. Alkyne

C. All have same

D. Alkane

1348. A metallic atom loses its valence electron to form a/an _________?
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A. a cation

B. an anion

C. none of these?

D. an anion cation

1349. Metal are highly ___________ ?
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A. Electropositive

B. Electronegativity

C. Both of these

D. Neutral

1350. Noble gases are so called zero group because they have:_________?
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A. Zero Valency

B. Zero Electronegativity

C. Zero Electron Affinity

D. Both A and B

E. All of these