Match column I with column II and mark the correct option from the given codes: Column I Column II (a) C 2 H 5 OH → CH 3 COOH (i) Conc. H 2 SO 4 , 170 ° C (b) C 2 H 5 OH → CH 2 = CH 2 (ii) H 2 , Ni (c) CH 4 → CH 3 Cl (iii) Alk. KMnO 4 (d) CH 2 = CH 2 → CH 3 CH 3 (iv) Cl 2 , sunlight

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

Two compounds X and Y have the same molecular formula, C 3 H 6 O. Identify the functional groups and structural formulae of X and Y.

- CHO and - CO , X = CH 3 CH 2 CHO , Y = CH 3 COCH 3

_ CHO and - CO , X = CH 3 OCH 2 CH 3 , Y = CH 3 COCH 3

- CO and - COOH , X = CH 3 COCH 3 , Y = CH 3 CH 2 COOH

- CHO and - COOH , X = CH 3 CH 2 OCH 3 , Y = CH 3 CH 2 COOH

EASY

10th Foundation

IMPORTANT

Earn 100

Which of the following statements are false about soaps and detergents?

(i) Soaps are water-soluble while detergents are not.

(ii) Soaps are non-biodegradable while detergents are biodegradable.

(iii) Hardness of water is due to the presence of $Ca$ and $Mg$ salts that form scum with soap.

(iv) The polar group in soaps is $- COONa$ .

58.33% studentsanswered this correctly

Important Questions on Carbon and its Compounds

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 4

Study the given flow chart carefully and identify W, X and Y.

Question Image

	W	X	Y
(A)	${CH}_{3} COOH$	${CH}_{3} COOH$	${CH}_{3} {COOCH}_{3}$
(B)	$H_{2} C = {CH}_{2}$	${CH}_{3} {COOCH}_{3}$	${CH}_{3} {COCH}_{3}$
(C)	$HC \equiv CH$	${CH}_{3} COOH$	${CH}_{3} {CH}_{2} {CH}_{2} OH$
(D)	$H_{2} C = {CH}_{2}$	${CH}_{3} COOH$	${CH}_{3} {COOCH}_{2} {CH}_{3}$

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 5

A few chemical processes are listed as:

I. An alcohol undergoes oxidation to produce a carboxylic acid.

II. An alcohol undergoes esterification.

III. A carboxylic acid reacts with sodium carbonate.

IV. Propane undergoes complete combustion.

In which of the given processes, products have more carbon atoms than the underlined reactant?

MEDIUM

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 7

In which of the following test tubes, effervescence will be observed?

Question Image

EASY

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 8

Read the given statements and mark the correct option.

Statement 1: Homologous series is a series of compounds having similar chemical properties.

Statement 2: The successive members of the homologous series differ by

- {CH}_{2}

group.

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 9

Match column I with column II and mark the correct option from the given codes:

	Column I		Column II
(a)	$C_{2} H_{5} OH \to {CH}_{3} COOH$	(i)	Conc. $H_{2} {SO}_{4}, 170^{°} C$
(b)	$C_{2} H_{5} OH \to {CH}_{2} = {CH}_{2}$	(ii)	$H_{2}, Ni$
(c)	${CH}_{4} \to {CH}_{3} Cl$	(iii)	Alk. ${KMnO}_{4}$
(d)	${CH}_{2} = {CH}_{2} \to {CH}_{3} {CH}_{3}$	(iv)	${Cl}_{2}$ , sunlight

EASY

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 10

Methane, the first member of the alkane homologous series has the boiling point equal to $- 161^{°} C$ . Which of the following represents the correct formula and boiling point of the third member of the series?

	Molecular formula	Boiling Point $({}^{°}C)$
(A)	$C_{3} H_{4}$	$- 85$
(B)	$C_{3} H_{8}$	$- 185$
(C)	$C_{3} H_{6}$	$- 69$
(D)	$C_{3} H_{8}$	$- 42$

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 11

Two compounds X and Y have the same molecular formula, C₃H₆O. Identify the functional groups and structural formulae of X and Y.

EASY

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 4 - Carbon and its Compounds>EXERCISES>Q 12

Saanvi wrote IUPAC names of a few compounds asked by her science teacher. The teacher told her that one of the compounds was not correctly named. Identify the one with the wrong name.

Important Questions on Carbon and its Compounds

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