Class 12 General Chemistry Quiz

Chemistry MCQ Questions for Class 12

Q: How many Chemistry questions are in each level?

Each ready level is designed for 50 active questions for the selected class, subject and difficulty.

Q: Which difficulty levels are available for Chemistry?

Students can practice Easy, Medium, Hard and Expert levels according to their preparation stage.

Q: Are answers and explanations available?

Yes, question pages include answer reveal, correct option, explanation, related questions and share options.

Practice Class 12 General Chemistry MCQ questions with answers, explanations and level-wise revision. Start from Easy levels and move toward Expert practice when your accuracy improves.

Class 12 General Chemistry Summary

Class 12 General Chemistry MCQ questions with answers, chapter wise quiz, topic wise practice, objective questions, exam revision aur answer explanation ke liye ye page banaya gaya hai. Chemistry me physical chemistry, organic chemistry, inorganic chemistry, reactions, equations aur numerical concepts ko simple explanations ke saath practice karein.

1+ chapters 4+ topics 4200 active MCQs

Easy Map Medium Map Hard Map Expert Map

Free MCQ Practice

Class 12 General Chemistry MCQ Questions with Answers

Class 12 General Chemistry ke liye chapter wise MCQ questions, topic wise practice, objective questions, quiz levels, correct answers aur simple explanations ek hi page par available hain. Students board exam revision, school test preparation, daily practice aur concept clarity ke liye yahan se focused practice start kar sakte hain.

Chemistry MCQ Class 12 General Chemistry Questions Chapter Wise Quiz Topic Wise Practice Answers and Explanations Easy to Expert Levels

Chapter Wise MCQ

Chemistry Chapters for Class 12

Choose a Chemistry chapter to practice focused MCQs with topic-wise revision, answers and explanations for Class 12 General. Chapters include Chapter 01 Solutions. Topics include 1: Types of Solutions, 2: Concentration Metrics, 3: Solubility, 4: Vapour Pressure.

1 Chapter 01 Solutions Chemistry Chapter 01 Solutions MCQ practice for Class 12 General with topic-wise questions, correct answers and simple explanations. 11: Types of Solutions600 Q 22: Concentration Metrics600 Q 33: Solubility600 Q 44: Vapour Pressure600 Q 55: Colligative Properties600 Q 66: Molar Mass Determination600 Q 77: Abnormal Molecular Mass600 Q Easy 1050 Medium 1050 Hard 1050 Expert 1050 4200 MCQs

Game Journey

Level Map for Chemistry MCQ Practice

Select a ready level to practice questions in a clean exam-style flow. Each level keeps the subject, class, difficulty and question count clear for faster revision.

Easy Medium Hard Expert

Easy Levels

Start

Medium Levels

Start

Hard Levels

Start

Expert Levels

Start

Latest Chemistry Questions

Question 1/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

एक परीक्षा में किसी छात्र ने (i<1) देखकर वियोजन लिख दिया। सही सुधार क्या होगा?

In an exam, a student sees (i<1) and writes dissociation. What is the correct correction?

Explanation opens after your attempt

Correct Answer

A. (i<1) सहसंयोजन बताता है(i<1) indicates association

Step 1

Concept

(i<1) का अर्थ प्रभावी कण संख्या कम होना है।

Step 2

Why this answer is correct

कण संख्या घटने का कारण सहसंयोजन होता है, वियोजन नहीं। / A decrease in particle count is due to association, not dissociation.

Step 3

Exam Tip

परीक्षा में (i<1) को अधिक मापा मोलर द्रव्यमान से जोड़कर याद रखें। / In exams, connect (i<1) with higher observed molar mass.

Open Question Page

Question 2/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

किसी (1:3) विद्युत अपघट्य का (50%) वियोजन है। (i) कितना होगा?

A (1:3) electrolyte is (50%) dissociated. What will be (i)?

Explanation opens after your attempt

Correct Answer

C. (2.5)

Step 1

Concept

(1:3) विद्युत अपघट्य पूर्ण वियोजन पर चार आयन देता है। / A (1:3) electrolyte gives four ions on complete dissociation.

Step 2

Why this answer is correct

(i=1+0.50(4-1)=2.5)। / (i=1+0.50(4-1)=2.5).

Step 3

Exam Tip

अनुपात (1:3) का अर्थ कुल (4) आयन है। / The ratio (1:3) means a total of (4) ions.

Open Question Page

Question 3/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

यदि किसी विलेय का परासरण दाब सामान्य से (20%) कम है, तो (i) और संभावित कारण क्या हैं?

If the osmotic pressure of a solute is (20%) lower than normal, what are (i) and the likely cause?

Explanation opens after your attempt

Correct Answer

A. (i=0.8), सहसंयोजन(i=0.8), association

Step 1

Concept

(20%) कम परासरण दाब का अर्थ सामान्य का (0.80) गुना है। / (20%) lower osmotic pressure means (0.80) times the normal value.

Step 2

Why this answer is correct

इसलिए (i=0.8)। / Therefore, (i=0.8).

Step 3

Exam Tip

(i<1) बताता है कि कण संख्या घटकर सहसंयोजन हुआ हो सकता है। / Since (i<1), particle number may have decreased due to association.

Open Question Page

Question 4/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

एक \(AB_3\) लवण के (25%) वियोजन पर मापा मोलर द्रव्यमान वास्तविक का कितना भाग होगा?

For (25%) dissociation of an \(AB_3\) salt, what fraction of the true molar mass will be observed?

Explanation opens after your attempt

Correct Answer

A. \(\frac{4}{7}\)

Step 1

Concept

\(AB_3\) चार आयन देता है, इसलिए (i=1+0.25(4-1)=1.75=\frac{7}{4})। / \(AB_3\) gives four ions, so (i=1+0.25(4-1)=1.75=\frac{7}{4}).

Step 2

Why this answer is correct

\((M_{\)obs\(}=\frac{M_{\)true}}{i})। \(/ (M_{\)obs\(}=\frac{M_{\)true}}{i}).

Step 3

Exam Tip

इसलिए मापा द्रव्यमान \(\frac{4}{7}\) भाग होगा। / So the observed mass is \(\frac{4}{7}\) of the true mass.

Open Question Page

Question 5/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

किस विकल्प में सहसंयोजन के लिए सही संबंध दिया गया है?

Which option gives the correct relation for association?

Explanation opens after your attempt

Correct Answer

A. \(i=1-\alpha+\frac{\alpha}{m}\)

Step 1

Concept

(m)-गुण सहसंयोजन में कुछ कण सामान्य रहते हैं और कुछ (m) अणुओं के समूह बनाते हैं। / In (m)-fold association, some particles remain normal and some form groups of (m) molecules.

Step 2

Why this answer is correct

इसलिए कुल प्रभाव \(1-\alpha+\frac{\alpha}{m}\) होता है। / So the total effect is \(1-\alpha+\frac{\alpha}{m}\).

Step 3

Exam Tip

(1+\alpha(m^-1)) वियोजन के लिए समान प्रकार का संबंध है, सहसंयोजन के लिए नहीं। / (1+\alpha(m^-1)) is a dissociation-type expression, not association.

Open Question Page

Question 6/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

किसी विलयन में (0.01) मोल \(A_2B_3\) का (60%) वियोजन होता है। प्रभावी कणों के मोल कितने होंगे?

In a solution, (0.01) mol of \(A_2B_3\) undergoes (60%) dissociation. How many moles of effective particles will be present?

Explanation opens after your attempt

Correct Answer

C. (0.034) मोल(0.034) mol

Step 1

Concept

\(A_2B_3\) पूर्ण वियोजन पर पांच आयन देता है, इसलिए (i=1+0.60(5-1)=3.4)। / \(A_2B_3\) gives five ions on complete dissociation, so (i=1+0.60(5-1)=3.4).

Step 2

Why this answer is correct

प्रभावी कणों के मोल \(0.01\times3.4=0.034\) होंगे। / Effective moles of particles \(=0.01\times3.4=0.034\).

Step 3

Exam Tip

पहले (i) निकालें, फिर प्रारंभिक मोल से गुणा करें। / First find (i), then multiply by initial moles.

Open Question Page

Question 7/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

यदि (60%) भाग सामान्य अणु रहे और (40%) भाग द्विगुणित हो जाए, तो (i) कितना होगा?

If (60%) remains as normal molecules and (40%) dimerises, what will be (i)?

Explanation opens after your attempt

Correct Answer

C. (0.80)

Step 1

Concept

सामान्य भाग (0.60) कण योगदान देता है। / The normal fraction contributes (0.60) particles.

Step 2

Why this answer is correct

द्विगुणित भाग \(\frac{0.40}{2}=0.20\) कण योगदान देता है। / The dimerised fraction contributes \(\frac{0.40}{2}=0.20\) particles.

Step 3

Exam Tip

कुल (i=0.60+0.20=0.80)। / Total (i=0.60+0.20=0.80).

Open Question Page

Question 8/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

किसी पदार्थ के लिए (i=3.25) है और वह पूर्ण वियोजन पर पांच आयन दे सकता है। वियोजन की मात्रा कितनी होगी?

For a substance, (i=3.25), and it can give five ions on complete dissociation. What is the degree of dissociation?

Explanation opens after your attempt

Correct Answer

B. (56.25%)

Step 1

Concept

पांच आयन देने वाले विलेय के लिए \(i=1+4\alpha\)। / For a solute producing five ions, \(i=1+4\alpha\).

Step 2

Why this answer is correct

\(3.25=1+4\alpha\), इसलिए \(4\alpha=2.25\)। / \(3.25=1+4\alpha\), so \(4\alpha=2.25\).

Step 3

Exam Tip

\(\alpha=0.5625\), यानी (56.25%)। / \(\alpha=0.5625\), or (56.25%).

Open Question Page

Question 9/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

यदि कोई विलेय सामान्यतः अवियोजित है और उसमें सहसंयोजन भी नहीं होता, तो चारों सहगुणधर्मी विधियों से (i) कैसा होना चाहिए?

If a solute is normally undissociated and does not undergo association, what should (i) be from all four colligative methods?

Explanation opens after your attempt

Correct Answer

A. लगभग (1)Approximately (1)

Step 1

Concept

सामान्य अवियोजित विलेय की प्रभावी कण संख्या नहीं बदलती। / A normal undissociated solute does not change effective particle number.

Step 2

Why this answer is correct

इसलिए (i=1) मिलता है। / Therefore, (i=1).

Step 3

Exam Tip

सभी सहगुणधर्मी विधियों में सामान्य व्यवहार का संकेत \(i\approx1\) है। / In all colligative methods, normal behaviour is indicated by \(i\approx1\).

Open Question Page

Question 10/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

किसी \(AB_2\) लवण के (i=2.0) होने पर वियोजन प्रतिशत कितना होगा?

For an \(AB_2\) salt, if (i=2.0), what is the percentage dissociation?

Explanation opens after your attempt

Correct Answer

B. (50%)

Step 1

Concept

\(AB_2\) तीन आयन देता है, इसलिए \(i=1+2\alpha\)। / \(AB_2\) gives three ions, so \(i=1+2\alpha\).

Step 2

Why this answer is correct

\(2=1+2\alpha\), अतः \(\alpha=0.5\)। / \(2=1+2\alpha\), hence \(\alpha=0.5\).

Step 3

Exam Tip

प्रतिशत वियोजन (50%) है। / The percentage dissociation is (50%).

Open Question Page

Question 11/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

एक अम्ल बेंजीन में (80%) द्विगुणित होता है। यदि वास्तविक मोलर द्रव्यमान (122,g mol\()^{-1}\) हो, तो मापा द्रव्यमान लगभग कितना होगा?

An acid is (80%) dimerised in benzene. If its true molar mass is (122,g mol\()^{-1}\), what will be the approximate observed molar mass?

Explanation opens after your attempt

Correct Answer

C. (203,g mol\(^{-1})\)

Step 1

Concept

(80%) द्विगुणन के लिए \(i=1-\frac{0.80}{2}=0.60\)। / For (80%) dimerisation, \(i=1-\frac{0.80}{2}=0.60\).

Step 2

Why this answer is correct

\((M_{\)obs\(}=\frac{122}{0.60}\approx203\),g mol^{-1})। \(/ (M_{\)obs\(}=\frac{122}{0.60}\approx203\),g mol\(^{-1}).\)

Step 3

Exam Tip

बेंजीन में अम्ल का द्विगुणन मोलर द्रव्यमान को अधिक दिखाता है। / Dimerisation of acids in benzene makes molar mass appear higher.

Open Question Page

Question 12/50 Expert Chemistry Chapter 01: Solutions 7: Abnormal Molecular Mass Class 12 Level 21

यदि किसी विलेय का (i=1.25) है, तो उसकी सहगुणधर्मी मात्रा सामान्य से कितनी अधिक होगी?

If a solute has (i=1.25), how much higher will its colligative effect be than normal?

Explanation opens after your attempt

Correct Answer

A. (25%) अधिक(25%) higher

Step 1

Concept

सहगुणधर्मी प्रभाव (i) के अनुपात में बदलता है। / A colligative effect changes in proportion to (i).

Step 2

Why this answer is correct

(i=1.25) का अर्थ सामान्य का (1.25) गुना है। / (i=1.25) means (1.25) times the normal value.

Step 3

Exam Tip

यह सामान्य से (25%) अधिक प्रभाव है। / This is (25%) higher than normal.

Open Question Page

More Chemistry Practice

FAQs

Class 12 General Chemistry FAQs

How many Chemistry questions are in each level?

Each ready level is designed for 50 active questions for the selected class, subject and difficulty.

Which difficulty levels are available for Chemistry?

Students can practice Easy, Medium, Hard and Expert levels according to their preparation stage.

Are answers and explanations available?

Yes, question pages include answer reveal, correct option, explanation, related questions and share options.

Chemistry MCQ Questions for Class 12

Class 12 General Chemistry MCQ Questions with Answers

Chemistry Chapters for Class 12

Level Map for Chemistry MCQ Practice

Easy Levels

Medium Levels

Hard Levels

Expert Levels

Latest Chemistry Questions

एक परीक्षा में किसी छात्र ने (i<1) देखकर वियोजन लिख दिया। सही सुधार क्या होगा?

Concept

Why this answer is correct

Exam Tip

किसी (1:3) विद्युत अपघट्य का (50%) वियोजन है। (i) कितना होगा?

Concept

Why this answer is correct

Exam Tip

यदि किसी विलेय का परासरण दाब सामान्य से (20%) कम है, तो (i) और संभावित कारण क्या हैं?

Concept

Why this answer is correct

Exam Tip

एक \(AB_3\) लवण के (25%) वियोजन पर मापा मोलर द्रव्यमान वास्तविक का कितना भाग होगा?

Concept

Why this answer is correct

Exam Tip

किस विकल्प में सहसंयोजन के लिए सही संबंध दिया गया है?

Concept

Why this answer is correct

Exam Tip

किसी विलयन में (0.01) मोल \(A_2B_3\) का (60%) वियोजन होता है। प्रभावी कणों के मोल कितने होंगे?

Concept

Why this answer is correct

Exam Tip

यदि (60%) भाग सामान्य अणु रहे और (40%) भाग द्विगुणित हो जाए, तो (i) कितना होगा?

Concept

Why this answer is correct

Exam Tip

किसी पदार्थ के लिए (i=3.25) है और वह पूर्ण वियोजन पर पांच आयन दे सकता है। वियोजन की मात्रा कितनी होगी?

Concept

Why this answer is correct

Exam Tip

Concept

Why this answer is correct

Exam Tip

किसी \(AB_2\) लवण के (i=2.0) होने पर वियोजन प्रतिशत कितना होगा?

Concept

Why this answer is correct

Exam Tip

Concept

Why this answer is correct

Exam Tip

यदि किसी विलेय का (i=1.25) है, तो उसकी सहगुणधर्मी मात्रा सामान्य से कितनी अधिक होगी?

Concept

Why this answer is correct

Exam Tip

More Chemistry Practice

Easy Level 1

Medium Level 1

Search Chemistry

All Subjects

Class 12 General Chemistry FAQs

Login to view answers