chemistry MCQs – Page 12

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 Review each marked answer and report any item that may be outdated or unclear.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
221. Without suction pump filtration is __________________?
comments icon0

A. Rapid process

B. Fast process

C. All are possible

D. Slow process
222. Which one of the following has highest volatility_________________?
comments icon0
A. Diethyl ether

B. Ethyl alcohol

C. Ethylene glycol

D. Water

223. Crystalline solids can be identified easily from their ___________________?
comments icon0

A. Colour

B. Transition temperature

C. Sharp melting point

D. Definite geometry

224. Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?
comments icon0

A. Lieuid is highly compressible

B. Liquid do not have definite volume

C. Liquid molecules can slide over each other

D. Liquid do not have definite shape

225. Colour of fluorescene produced by cathode rays depends upon________________?
comments icon0
A. Composition of glass

B. Pressure

C. Volume

D. Temperature

226. Force responsible to hold atoms together in a compound is called ________________?
comments icon0

A. Interaction

B. All of above represent same entity

C. Bond

D. Attractive force

227. Table salt crystallizes with a______________________?
comments icon0

A. Face centered cubic lattice

B. body centered cubic lattice

C. simple cubic lattice

D. othorhombic lattice

228. Enthalpy of combustion for food fuel and other compounds can be measured accurately by________________?
comments icon0

A. glass calorimeter

B. thermometer

C. manometer

D. bomb calorimeter
229. Anything which depends upon initial and final state of a system is_______________?
comments icon0

A. surrounding

B. enthalpy

C. state function

D. environment

230. Ether functional group can be represented as ____________________?
comments icon0

A. R-COOH

B. R-O-R

C. R-CO-R

D. OH

231. By combining n atmic orbitals no. of hybrid orbitals will be__________________?
comments icon0

A. impossible to predict

B. 2n

C. n

D. 3n

232. Ionization energy in a period generally ___________________?
comments icon0

A. No change

B. Variable trend

C. Increases

D. Decreases

233. Which one of the following has polar covalent bond ?
comments icon0

A. CH4

B. N2

C. H2

D. HF
234. Orbitals of same energy produced after mixing of orbitals of different energy are called __________________?
comments icon0

A. Zeeman orbitals

B. Hybrid orbitals

C. Generate orbitals

D. Degenerate orbitals
235. Propene can exhibit________________?
comments icon0

A. cis-trans isomerism

B. geometric isomerism

C. both a & b

D. none of the above
236. Which state of matter has the lowest density ?
comments icon0

A. Plasma

B. Liquid

C. Solid

D. Gas
237. Unit of dipole moment is_________________?
comments icon0

A. Newton

B. Pascal

C. Poise

D. Debye
238. Forces of attraction which may be present between all kinds of atoms and molecules are _____________________?
comments icon0

A. Dipole-induced dipole

B. intramolecular

C. intermolecular

D. van der Waal
239. Quantum number which tells the energy of electron is________________?
comments icon0

A. s

B. n

C. m

D. 1

240. Crystallization does not involve_______________?
comments icon0

A. cooling

B. vaporization

C. heating

D. sublimation