Carbon & its Compounds-Vasu Classes


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Carbon & its Compounds-Vasu Classes

1. The general formula of cyclic alkanes is

a) CnH2n
b) CnH2n+2
c) CnH2n-2
d) None

2. Alkalyne hydrolysis of esters is called

a) Saponification
b) Esterfication
c) Controlled oxidation
d) Combustion

3. The formula of ethyl ethanoate is

a) CH3 COOC2H5
b) HCOOCH3
c) CH3COOH
d) C2H6O

4. Which one is an aldehyde group

a) -COOH
b) -COOR
c) -OH
d) -CHO

5. Which gas is released when ethanoic acid reacts with sodium bicarbonate

a) H2
b) CO2
c) CH4
d) C2H2

6. Which part of soap molecule hydrophillic

a) Ionic Part
b) Hydrcarbon part
c) Both

7. Which of the following will burn with a sooty flame

a) Butane
b) Methane
c) Accetylene
d) B and C

8. Name the compound formed by removal of one molecule of water from ethanol

a) Ester
b) Alcohol
c) Ethane
d) Ethene

9. A compound C2H4O2 reacts with a neutral compound C2H6O and forms a sweet smelling substance

a) Methyl ethanoate
b) Methanoic acid
c) Ethyl ethanoate
d) Butane

10. Soaps are not suitable with

a) Hot water
b) Rain water
c) Hard water
d) Cold water
e) All of the above

11. Soaps are

a) Sodium salts of lower fatty acids
b) Sodium salts of higher fatty acids
c) Made of petroleum products
d) Salts of benzene sulphonic acid

12. What is denatured alcohol

a) Methanol
b) Ethanol
c) Ethanol made unfit for drinking
d) All of the above

13. Two adjacent compounds in a homologous series differ by

a) 24u
b) 28u
c) 14u
d) 14gm
e) C and D

14. Fifth memeber of alkyne series is

a) butane
b) pentyne
c) hexyne
d) heptene

15. Compounds having same molecular formula but different structural formula are called

a) Isomers
b) Allotrops
c) Isotopes
d) Polymers

16. These componds are unsaturated

a) Single bonded
b) double bonded
c) triple bonded
d) All of the above
e) B and C

17. Self linking property of carbon is called

a) Ionisation
b) Catenation
c) Polymerisation
d) Isomeriastion

18. Carbon element is

a) tetravalent
b) trivalent
c) monovalent
d) none

19. Vanaspati ghee is prepared by

a) alkalyne hydrolysis of oils
b) Esterfication
c) Hydrogenation of saturated hydrocarbons
d) Hydrogentaion of vegetable oils

20. The reaction in which one atom or functional group is replaced by some other atom or functional group is called

a) Addition reaction
b) Saponification
c) Substituition
d) Hydrogenation

21. The formula of chloroform is

a) CHCl3
b) CH3Cl
c) CCl4
d) CH2Cl2

22. Which of the following is incorrect when methanol is consumed

a) Protoplasm gets coagulated
b) Protoplasm becomes more active
c) Effects the optic nerves causing blindness
d) Protoplasm becomes more viscous

23. Which among the following is an aromatic compound

a) Methane
b) Ethyne
c) Propene
d) Benzene

24. Which of the following decolourises alkaline KMnO4

a) Ethane
b) Ethene
c) Methane
d) Prpane

25. The by product of soap is

a) isoprene
b) butene
c) glycerol
d) ethylene glycol

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