Chemistry MCQS

231. Symbol of the potassium element is:
A. P
B. PT
C. K
D. O

232. Which of the following has a slippery touch?
A. Acid
B. Base
C. Salt
D. Gas

233. Which of the following pair of elements is chemically similar?
A. K, Cr
B. Cu, Ca
C. F, Cl
D. N, O

234. Law of multiple proportions is put forward by:
A. Lious Proust
B. John Dalton
C. Benjamin Richter
D. None of these

235. Solutions are:
A. Opaque
B. Colloids
C. Transparent
D. None of these

236. One Faraday is equal to __ Coulombs.
A. 96500
B. 96600
C. 96700
D. 96800

237. In 18 grams of water (H2O), the number of molecules is:
A. 6.02 x 10^23
B. 6.02 x 10^24
C. 6.02 x 10^30
D. 6.02 x 10^34

238. Which of the statements given below concerning properties of a solution describes a colligative effect?
A. Edge of boiling over of unadulterated water diminishes by the extra of ethanol
B. Fume tension of unadulterated water diminishes by the expansion of nitric corrosive
C. Fume tension of unadulterated benzene diminishes by the expansion of naphthalene
D. Edge of boiling over of unadulterated benzene increments by the expansion of toluene

239. The Ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO4 is:
A. 0.3
B. 0.6
C. 0.9
D. 0.2

240. Maximum freezing point falls in:
A. Camphor
B. Napthalene
C. Benzene
D. Water