Test Your Knowledge - Free MCQ PRACTICE
by Saksham Chaudhry
Chemistry
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DRIVINGTEST
A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. The gas which, on heating at high temperatures under high pressure, transforms into a waxy solid is
A. chlorine
B. hydrogen
C. acetylene
D. ethylene

2. In Tollen's test, aldehydes
A. Are oxidised to acids
B. Are reduced to alcohol
C. Precipitate Ag+ as AgCI
D. Neither reduced nor oxidised

3. The spin only magnetic moment of Mn+4 ion is nearly
A. 3 BM
B. 4 BM
C. 5 BM
D. 6 BM

4. The main chemical constituent of clay is
A. silicon oxide
B. aluminium borosilicate
C. zeolites
D. aluminium silicate

5. During the adsorption of Krypton on activated charcoal at low temperature;
A. ?H < 0 and ?S < 0
B. ?H < 0 and ?S > 0
C. ?H > 0 and ?S < 0
D. ?H > 0 and ?S > 0

6. The IUPAC name of [Co(NH3)5 ONO]2+ ion is
A. Penta ammine nitro cobalt (III) ion
B. Penta ammine nitrito cobalt (IV) ion
C. Penta ammine nitro cobalt (IV) ion
D. Penta ammine nitrito cobalt (III) ion

7. The drug, reserpine is used to
A. cure arthritis
B. alleviate pain
C. reduce high blood pressure
D. reduce high palpitation

8. lsobars are elements with
A. same mass number, different atomic number
B. same atomic number, different mass number
C. different number of protons
D. different number of neutrons

9. Fraction of total pressure exerted by methane is
A. 1/9
B. 1/3
C. 8/9
D. 1/2

10. The van't Hoff factor I for a compound which undergoes dissociation in one solvent and association in other solvent is respectively
A. Greater than one and less than one
B. Less than one and less than one
C. Less than one and greater than one
D. Greater than one and greater than one

11. The element which forms the largest number of compounds with hydrogen is
A. oxygen
B. silicon
C. carbon
D. boron

12. The sp3d2 hybridization of central atom of a molecule would lead to
A. Trigonal bipyramidal geometry
B. Octahedral geometry
C. Tetrahedral geometry
D. square planar geometry

13. 12 cc of Hydrogen per second under S.T.P. condition. The current to be passed is
A. 19.3 Amp
B. 9.65 Amp
C. 0.965 Amp
D. 1.93 Amp

14. The reagent with which both acetaldehyde and acetone react is
A. Fehling's reaction
B. I2/NaOH
C. Carbonic acid
D. Tollen's reagent

15. Which of the following is the lightest gas?
A. Nitrogen
B. Hydrogen
C. Ammonia
D. Carbon dioxide

16. The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
A. geometric isomerism
B. both optical and geometric isomerism
C. neither optical nor geometric isomerism
D. optical isomerism

17. In the following, the element with the highest ionisation energy is
A. [Ne]3s23p2
B. [Ne]3s23p4
C. [Ne]3s23p3
D. [Ne]3s23p1

18. Carbon can reduce ferric oxide to iron at a temperature above 983 K because
A. iron has a higher affinity towards oxygen than carbon.
B. carbon monoxide formed is thermodynamically less stable than ferric oxide.
C. carbon has a higher affinity towards oxidation than iron.
D. free energy change for the formation of carbon dioxide is less negative than that for ferric oxide.

19. Which one of the following is the basis of modern periodic table?
A. Atomic mass
B. Atomic number
C. Atomic size
D. Atomic volume

20. Camphor can easily be purified by the process of
A. sublimation
B. distillation
C. crystallisation
D. sedimentation

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