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Class 12 > PYQ CHEMISTRY > 2021 > Set 1

2021

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Q11
Which of the following molecules is chiral in nature?

Single Choice Question Medium View solution

Q12
The reaction:
<p><img alt="" src="" style="height:101px; width:400px" /></p>

is an example of

Single Choice Question Hard View solution

Q13
Which of the following is fibrous protein?

Single Choice Question Easy View solution

Q14
The acid strength of HF, HCI, HBr and HI increases in the order

(a) HF

(b) HI < HBr < HCI

Single Choice Question Medium View solution

Q15
Which is not correct about concentrated H₂SO₄?

Single Choice Question Hard View solution

Q16
Pure water boils at 373.15 K and nitric acid boils at 359.15 K. An azeotropic mixture of H₂O and HNO₃ boils at 393.55 K. Distilling the azeotropic mixture will cause

Single Choice Question Hard View solution

Q17
A 5% (by mass) solution of glucose (molar mass = 180 g/mol) is isotonic with 1% solution (by mass) of a substance ‘X’. The molar mass of ‘X’ is

Single Choice Question Hard View solution

Q18
An SN1 reaction of an enantiomerically pure chiral alkyl halide gives a product

Single Choice Question Medium View solution

Q19
In the following reaction,
<p><img alt="" src="" style="height:142px; width:400px" /></p>

The product formed is

Single Choice Question View solution

Q20
α-D-Glucopyranose and β-D-Glucopyranose are

Single Choice Question Easy View solution

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2021

Q11
Which of the following molecules is chiral in nature?

Solution

Q12
The reaction:
<p><img alt="" src="" style="height:101px; width:400px" /></p>

is an example of

Solution

Q13
Which of the following is fibrous protein?

Solution

Q14
The acid strength of HF, HCI, HBr and HI increases in the order

Solution

Q15
Which is not correct about concentrated H₂SO₄?

Solution

Q16
Pure water boils at 373.15 K and nitric acid boils at 359.15 K. An azeotropic mixture of H₂O and HNO₃ boils at 393.55 K. Distilling the azeotropic mixture will cause

Solution

Q17
A 5% (by mass) solution of glucose (molar mass = 180 g/mol) is isotonic with 1% solution (by mass) of a substance ‘X’. The molar mass of ‘X’ is

Solution

Q18
An SN1 reaction of an enantiomerically pure chiral alkyl halide gives a product

Solution

Q19
In the following reaction,
<p><img alt="" src="" style="height:142px; width:400px" /></p>

The product formed is

Solution

Q20
α-D-Glucopyranose and β-D-Glucopyranose are

Solution

Subjects

2021

Q11 Which of the following molecules is chiral in nature?

Solution

Q12 The reaction: <p><img alt="" src="" style="height:101px; width:400px" /></p> is an example of

Solution

Q13 Which of the following is fibrous protein?

Solution

Q14 The acid strength of HF, HCI, HBr and HI increases in the order

Solution

Q15 Which is not correct about concentrated H₂SO₄?

Solution

Q16 Pure water boils at 373.15 K and nitric acid boils at 359.15 K. An azeotropic mixture of H₂O and HNO₃ boils at 393.55 K. Distilling the azeotropic mixture will cause

Solution

Q17 A 5% (by mass) solution of glucose (molar mass = 180 g/mol) is isotonic with 1% solution (by mass) of a substance ‘X’. The molar mass of ‘X’ is

Solution

Q18 An SN1 reaction of an enantiomerically pure chiral alkyl halide gives a product

Solution

Q19 In the following reaction, <p><img alt="" src="" style="height:142px; width:400px" /></p> The product formed is

Solution

Q20 α-D-Glucopyranose and β-D-Glucopyranose are

Solution

Subjects

Q11
Which of the following molecules is chiral in nature?

Q12
The reaction:
<p><img alt="" src="" style="height:101px; width:400px" /></p>

is an example of

Q13
Which of the following is fibrous protein?

Q14
The acid strength of HF, HCI, HBr and HI increases in the order

Q15
Which is not correct about concentrated H₂SO₄?

Q16
Pure water boils at 373.15 K and nitric acid boils at 359.15 K. An azeotropic mixture of H₂O and HNO₃ boils at 393.55 K. Distilling the azeotropic mixture will cause

Q17
A 5% (by mass) solution of glucose (molar mass = 180 g/mol) is isotonic with 1% solution (by mass) of a substance ‘X’. The molar mass of ‘X’ is

Q18
An SN1 reaction of an enantiomerically pure chiral alkyl halide gives a product

Q19
In the following reaction,
<p><img alt="" src="" style="height:142px; width:400px" /></p>

The product formed is

Q20
α-D-Glucopyranose and β-D-Glucopyranose are