Chemistry MCQS

391. Which individual units lose identity?
(A) Complex Salts
(B) Simple Salts
C) Compound Salts
(D) None of the above

392. Molten KCl conducts electricity because of?
(A) Free electrons
(B) Free neutrons
C) Free ions
(D) None of the above

393. Oxidation number of P in KH2PO2 is?
A) +1
(B) +2
(C) +3
(D) +6

394. Order of reaction is?
A) Can be determined from the experiment.
(B) Can be determined from the equation.
(C) Can not be determined from the equation.
(D) None of the above

395. Which catalyst is used in Friedel-Craft Alkylation?
(A) AlBF
B) AlCl3
(C) BFCl3
(D) None of the above

396. Toluene is prepared from benzene in?
(A) Perkin reaction
(B) Wurtz reaction
C) Friedel-Craft reaction
(D) None of the above

397. Which indicator is not used in a conical flask?
A) External indicator
(B) Self-indicator
(C) Internal indicator
(D) Mixed indicator

398. Device used to measure atmospheric pressure is:
(A) Stalagmometer
B) Barometer
(C) Viscometer
(D) Pycnometer

399. At a certain pressure, the volume of gas at 25 degrees Celsius is 20 L. If pressure and temperature are doubled the volume will be:
A) 20 L
(B) 40 L
(C) 10 L
(D) 5 L

400. Under which conditions, the relationship between volumes and moles can be plotted:
A) Constant T and P
(B) Constant N and P
(C) Constant V and P
(D) Constant P and V