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Class 12 > PYQ CHEMISTRY > 2021 > Set 1

2021

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Q31
Which of the following is most reactive towards nucleophilic substitution reaction?

Single Choice Question Hard View solution

Q32
In the following reaction
<p><img alt="" src="" style="height:86px; width:400px" /></p>

Single Choice Question Hard View solution

Q33
The structure(s) of the major products expected from the mononitration of 3-methyl phenol will be

Single Choice Question View solution

Q34
1-Phenylethanol may be prepared by the reaction of C₆H₅MgBr with

Single Choice Question View solution

Q35
Two among the three components of DNA are 2-deoxyribose and a nitrogen-containing heterocyclic base. The third component is

Single Choice Question Easy View solution

Q36
Which one among the following bases is usually not present in RNA?

Single Choice Question Easy View solution

Q37
Glucose on reaction with (CH₃CO)₂O forms glucose pentaacetate which confirms the presence of

Single Choice Question Hard View solution

Q38
To increase the solubility of CO₂ gas in soft drinks, the bottle is sealed under

Single Choice Question Easy View solution

Q39
A solution of a pair of volatile liquids A and B shows negative deviation from Raoult’s law. This is because

Single Choice Question Medium View solution

Q40
The structure of XeF₆ is

Single Choice Question Easy View solution

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2021

Q31
Which of the following is most reactive towards nucleophilic substitution reaction?

Solution

Q32
In the following reaction
<p><img alt="" src="" style="height:86px; width:400px" /></p>

Solution

Q33
The structure(s) of the major products expected from the mononitration of 3-methyl phenol will be

Solution

Q34
1-Phenylethanol may be prepared by the reaction of C₆H₅MgBr with

Solution

Q35
Two among the three components of DNA are 2-deoxyribose and a nitrogen-containing heterocyclic base. The third component is

Solution

Q36
Which one among the following bases is usually not present in RNA?

Solution

Q37
Glucose on reaction with (CH₃CO)₂O forms glucose pentaacetate which confirms the presence of

Solution

Q38
To increase the solubility of CO₂ gas in soft drinks, the bottle is sealed under

Solution

Q39
A solution of a pair of volatile liquids A and B shows negative deviation from Raoult’s law. This is because

Solution

Q40
The structure of XeF₆ is

Solution

Subjects

2021

Q31 Which of the following is most reactive towards nucleophilic substitution reaction?

Solution

Q32 In the following reaction <p><img alt="" src="" style="height:86px; width:400px" /></p>

Solution

Q33 The structure(s) of the major products expected from the mononitration of 3-methyl phenol will be

Solution

Q34 1-Phenylethanol may be prepared by the reaction of C₆H₅MgBr with

Solution

Q35 Two among the three components of DNA are 2-deoxyribose and a nitrogen-containing heterocyclic base. The third component is

Solution

Q36 Which one among the following bases is usually not present in RNA?

Solution

Q37 Glucose on reaction with (CH₃CO)₂O forms glucose pentaacetate which confirms the presence of

Solution

Q38 To increase the solubility of CO₂ gas in soft drinks, the bottle is sealed under

Solution

Q39 A solution of a pair of volatile liquids A and B shows negative deviation from Raoult’s law. This is because

Solution

Q40 The structure of XeF₆ is

Solution

Subjects

Q31
Which of the following is most reactive towards nucleophilic substitution reaction?

Q32
In the following reaction
<p><img alt="" src="" style="height:86px; width:400px" /></p>

Q33
The structure(s) of the major products expected from the mononitration of 3-methyl phenol will be

Q34
1-Phenylethanol may be prepared by the reaction of C₆H₅MgBr with

Q35
Two among the three components of DNA are 2-deoxyribose and a nitrogen-containing heterocyclic base. The third component is

Q36
Which one among the following bases is usually not present in RNA?

Q37
Glucose on reaction with (CH₃CO)₂O forms glucose pentaacetate which confirms the presence of

Q38
To increase the solubility of CO₂ gas in soft drinks, the bottle is sealed under

Q39
A solution of a pair of volatile liquids A and B shows negative deviation from Raoult’s law. This is because

Q40
The structure of XeF₆ is