ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 6

MEDIUM

11th ICSE

IMPORTANT

Earn 100

Atomic radius of gallium ( $135 pm$ ) is less than that of aluminium ( $143 pm$ ).

Important Questions on Sample Question Paper 2

MEDIUM

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 7

Why do the

C - C

bonds rather than

C - H

bonds break during cracking of alkanes?

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 7

Convert

1

-Bromopropane to

2

-Bromopropane.

HARD

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 7

In the alkane,

{CH}_{3} {CH}_{2} - C {({CH}_{3})}_{2} - {CH}_{2} CH {({CH}_{3})}_{2}

, identify

1^{°}, 2^{°}

and

3 °

carbon atoms and give the number of

H

-atoms bonded to each one of these.

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 7

An alkane

C_{8} H_{18}

is obtained as the only product on subjecting a primary alkyl halide to Wurtz reaction. On monobromination this alkane yields a single isomer of a tertiary bromide. Write the structure of alkane and the tertiary bromide.

HARD

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 8

The relative reactivity of

1^{°}, 2^{°}, 3^{°}

hydrogen's towards chlorination is

1 : 3.8 : 5

. Calculate the percentages of all monochlorinated products obtained from

2

-Methylbutane.

MEDIUM

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 9

Explain the following: Gallium has higher ionisation enthalpy than aluminium.

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 9

Boron does not exist as

B^{3 +}

ion.

MEDIUM

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 16 - Sample Question Paper 2>SAMPLE QUESTION PAPER 2>Q 9

Aluminium forms

{[{AlF}_{6}]}^{3 -}

ion but boron does not form

{[{BF}_{6}]}^{3 -}

ion.