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Chemistry in Everyday Life Chemistry - Chemistry in Everyday Life

Rajasthan Board (RBSE) - STD 12 Science - Chemistry (Rajasthan - English Medium). 365 questions in this chapter.

Question types

Chemistry in Everyday Life question types

365 questions across 6 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

365
Questions
6
Question groups
5
Question types
Sample Questions

Chemistry in Everyday Life questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2M.C.Q (1 Marks)1 Mark
An advantage of detergents over soaps is:
  • A
    Detergents always contain heads.
  • B
    Detergents are biodegradable.
  • C
    Detergents are cheaper to make.
  • ✓
    Detergents do not precipitate in hard water.

Answer: D.

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Q 3M.C.Q (1 Marks)1 Mark
The average molecular mass of drugs is approximately:
  • ✓
    $\text{160 - 480g/ mol}$
  • B
    $\text{1600 - 4800g/ mol}$
  • C
    $\text{10 - 100g/ mol}$
  • D
    $\text{0.1 - 100g/ mol}$

Answer: A.

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Q 6Assertion (A) & Reason (B) MCQ1 Mark
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Enzymes have active sites that hold substrate molecule for a chemical reaction.
Reason: Drugs compete with natural substrate by attaching covalently to the active site of enzyme.
  • A
    Assertion and reason both are correct statement but reason does not explain assertion.
  • B
    Assertion and reason both are correct and reason explains the assertion.
  • C
    Both assertion and reason are wrong statement.
  • ✓
    Assertion is correct statement reason is wrong statement.

Answer: D.

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Q 7Assertion (A) & Reason (B) MCQ1 Mark
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Chemical messenger gives message to the cell without entering the cell.
Reason: Chemical messenger is received at the binding site of receptor proteins.
  • A
    Assertion and reason both are correct statement but reason does not explain assertion.
  • ✓
    Assertion and reason both are correct and reason explains the assertion.
  • C
    Both assertion and reason are wrong statement.
  • D
    Assertion is correct statement reason is wrong statement.

Answer: B.

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Q 8Assertion (A) & Reason (B) MCQ1 Mark
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Preservative are added to food items.
Reason: Preservatives inhibit the growth of microorganisms.
  • A
    Assertion and reason both are correct statement but reason does not explain assertion.
  • ✓
    Assertion and reason both are correct and reason explains the assertion.
  • C
    Both assertion and reason are wrong statement.
  • D
    Assertion is correct statement reason is wrong statement.

Answer: B.

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Q 9Assertion (A) & Reason (B) MCQ1 Mark
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.
Reason: In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.
  • A
    Assertion and reason both are correct statement but reason does not explain assertion.
  • B
    Assertion and reason both are correct and reason explains the assertion.
  • C
    Both assertion and reason are wrong statement.
  • ✓
    Assertion is correct statement reason is wrong statement.

Answer: D.

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Q 10Assertion (A) & Reason (B) MCQ1 Mark
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Artificial sweeteners are added to the food to control the intake of calories.
Reason: Most of the artificial sweeteners are inert and do not metabolise in the body.
  • A
    Assertion and reason both are correct statement but reason does not explain assertion.
  • ✓
    Assertion and reason both are correct and reason explains the assertion.
  • C
    Both assertion and reason are wrong statement.
  • D
    Assertion is correct statement reason is wrong statement.

Answer: B.

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Q 202 Marks Questions2 Marks
Write the chemical equation for preparing sodium soap from glyceryl oleate and glyceryl palmitate. Structural formulae of these compounds are given below.
$\big(\text{C}_{16}\text{H}_{31}\text{COO)}_{3}\text{C}_{3}\text{H}_{5}-\text{Glyceryl palmitate}.$
$\big(\text{C}_{17}\text{H}_{32}\text{COO)}_{3}\text{H}_{5}-\text{Glyceryl oleate}.$
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Q 265 Marks Questions5 Marks
Seeing the growing cases of diabetes and depression among young children, Mr. Lugani, the principal of one reputed school organised a seminar in which he invited parents and principals. They all resolved this issue by strictly banning junk food in schools and introducing healthy snacks and drinks like soup, lassi, milk, etc. in school canteens. They also decided to make compulsory half an hour of daily physical activities for the students in the morning assembly. After six months, Mr. Lugani conducted the health survey in most of the schools and discovered a tremendous improvement in the health of the students.
After reading the above passage, answer the following questions:
  1. What are the values (at least two) displayed by Mr. Lugani?
  2. As a student, how can you spread awareness about this issue?
  3. What are antidepressant drugs ? Give an example.
  4. Name the sweetening agent used in the preparation of sweets for a diabetic patient.
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Q 275 Marks Questions5 Marks
Due to hectic and busy schedule, Mr. Singh started taking junk food in the lunch break and slowly became habitual of eating food irregularly to excel in his field. One day during meeting he felt severe chest pain and fell down. Mr. Khanna, a close friend of Mr. Singh took him to doctor immediately. The doctor diagnosed that Mr. Singh was suffering from acidity and prescribed some medicines. Mr. Khanna advised him to eat homemade food and change his lifestyle by doing yoga, meditation and some physical exercise. Mr. Singh followed his friend's advice and after few days he started feeling better. After reading the above passage, answer the following:
  1. What are the values (at least two) displayed by Mr. Khanna?
  2. What are antacids? Give one example.
  3. Would it be advisable to take antacids for a long period of time? Give reason.
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Q 285 Marks Questions5 Marks
Due to hectic and busy schedule, Mr. Awasthi made his life full of tensions and anxiety. He started taking sleeping pills to overcome the depression without consulting the doctor. Mr. Roy, a close friend of Mr. Awasthi, advised him to stop taking sleeping pills and suggested to change his lifestyle by doing Yoga, meditation and some physical exercise. Mr. Awasthi followed his friend’s advice and after few days he started feeling better.
After reading the above passage, answer the following:
  1. What are the values (at least two) displayed by Mr. Roy?
  2. Why it is not advisable to take sleeping pills without consulting doctor?
  3. What are tranquillizers? Give two examples.
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Q 295 Marks Questions5 Marks
Due to hectic and busy schedule, Mr. Angad made his life full of tensions and anxiety. He started taking sleeping pills to overcome the depression without consulting the doctor. Mr. Deepak, a close friend of Mr. Angad, advised him to stop taking sleeping pills and suggested to change his lifestyle by doing Yoga, meditation and some physical exercise. Mr. Angad followed his friend’s advice and after few days he started feeling better.
After reading the above passage, answer the following:
  1. What are the values (at least two) displayed by Mr. Deepak?
  2. Why is it not advisable to take sleeping pills without consulting doctor?
  3. What are tranquilizers? Give two examples.
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Q 305 Marks Questions5 Marks
Mr. Roy, the principal of one reputed school organised a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students.They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Roy conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.

After reading the above passage, answer the following:
  1. What are the values (at least two) displayed by Mr. Roy?
  2. As a student, how can you spread awareness about this issue?
  3. What are tranquillizers? Give an example.
  4. Why is use of aspartame limited to cold foods and drinks?
View full solution →
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