chemistry MCQs – Page 62

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 Review each marked answer and report any item that may be outdated or unclear.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
1221. Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use:__________?
comments icon0

A. None of these

B. Hydrogen tank

C. Oxygen tank

D. Nitrogen tank

1222. Following are the anions of soap which form Ca and Mg ions which we see as curd in water
comments icon0

A. Sodium hexadecanoate

B. Sodium octadecanoate

C. Sodium pentadecanoate

D. Both A & B
1223. Quantum numbers are __________ ?
comments icon0

A. Leometric values

B. Arithmetical values

C. Numerical values

D. Logical values

1224. Cassiterite is an ore of_______?
comments icon0

A. Ni

B. Sb

C. Sn

D. Mn

1225. The concept of ensemble was introduced by____________?
comments icon0

A. Carnot

B. Gibbs

C. Boltzmann

D. Mexwell

1226. Which of the following method is used to separate Hydrogen gas from water Gas?
comments icon0

A. Cyber Twinkling process

B. Bosch Process

C. Steam process

D. Palladium process

1227. Actinides are the elements with atomic number from:
comments icon0

A. 97 to 104

B. 36 to 43

C. 101 to 115

D. 89 to 103
1228. Radiations are harmful as it:___________?
comments icon0
A. Causes skin cancer

B. Alters body tissue

C. is unstable

D. Causes anemia

1229. For the generation of biogas, the materials commonly used are__________?
comments icon0

A. Forest residues

B. Animal wastes

C. None of these

D. Aquatic plants

1230. Which one is a pure carbon?
comments icon0

A. None of These

B. Coal Tar

C. Coal gas

D. Coke
1231. The snow on the mountains does NOT melt all at once when it is heated by the sun because:
comments icon0

A. it reflects most of the heat from the sun

B. it has a low specific heat capacity

C. it has a high latent heat of fusion

D. it becomes very hard

1232. Which of the following compounds is not soluble in HNO3___?
comments icon0

A. CdS

B. PbS

C. CuS

D. AgCl
1233. Kipps Apparatus is used to prepare_________?
comments icon0

A. Cu

B. HS

C. Cl

D. NaOH

1234. Milk tastes sour when kept in the open for sometime due to the formation of __________?
comments icon0
A. lactic acid

B. carbonic acid

C. citric acid

D. acetic acid

1235. Process used to separate insoluble particles from liquids is ___________ ?
comments icon0

A. Drying

B. Sieving

C. Filtration

D. Extraction

1236. The radio-active element used in heart pacemakers is ___________?
comments icon0

A. Radium

B. Uranium

C. Deuterium

D. Plutonium
1237. Phonon is Quantum of___________?
comments icon0

A. Electromagnetic wave

B. Elastic wave

C. Longitudinal wave

D. Transverse wave

1238. Which one of the following statement is correct for urea ?
comments icon0

A. it is a natural fertilizer

B. it provides micronutrients to the plants

C. it is an inorganic water soluble compound

D. it is a synthetic fertilizer
1239. The composition of Golden spangles is_________?
comments icon0

A. As2Cr2O7

B. BaCrO4

C. PbI2

D. PbCrO4
1240. The dipole moment of CS is ____________?
comments icon0

A. 2.3

B. 1.8

C. 0

D. 1