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Assertion (A) All chemicals added to food items are called foo
Chemistry Exemplar
Chemistry Exemplar

Class 12

NCERT Exemplar

Publisher:
NCERT
Subject:
Chemistry
1

Chapter 1: The Solid State

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2

Chapter 2: Solutions

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3

Chapter 3: Electrochemistry

68 questions

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4

Chapter 4: Chemical Kinetics

66 questions

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5

Chapter 5: Surface Chemistry

81 questions

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6

Chapter 6: General Principles and Processes of Isolation of Elements

55 questions

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7

Chapter 7: The p-Block Elements

72 questions

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8

Chapter 8: The d-and f-Block Elements

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9

Chapter 9: Coordination Compounds

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10

Chapter 10: Haloalkanes and Haloarenes

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11

Chapter 11: Alcohols, Phenols and Ethers

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12

Chapter 12: Aldehydes, Ketones and Carboxylic Acids

50 questions

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13

Chapter 13: Amines

77 questions

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14

Chapter 14: Biomolecules

71 questions

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15

Chapter 15: Polymers

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16

Chapter 16: Chemistry in Everyday Life

100 questions

Q1
Assertion (A) Receptor proteins show selectivity for one chemical messenger over the other.
Reason (R) Chemical messenger binds to the receptor site and inhibits its natural function.
Q2
Assertion (A) All chemicals added to food items are called food preservatives.
Reason (R) All these chemicals increase the nutritive value of the food.
Q3
Assertion (A) Preservative are added to food items.
Reason (R) Preservatives inhibit the growth of microorganisms.
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Question
Easy
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Solving time: 1 mins

Assertion (A) All chemicals added to food items are called food preservatives.
Reason (R) All these chemicals increase the nutritive value of the food.

A
Assertion and reason both are correct statements 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 statements.

D
Assertion is correct statement reason is wrong statement.

E
Assertion is wrong statement reason is correct statement.

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Chemistry Exemplar (NCERT Exemplar)

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Assertion (A) All chemicals added to food items are called food preservatives.
Reason (R) All these chemicals increase the nutritive value of the food.
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Text SolutionText solutionverified iconVerified

Both assertion and reason are wrong statements. Correct assertion Chemicals which are used to protect food against bacteria, yeasts and moulds are called food preservatives.
Correct reason Preservatives do not increase the nutritive values of food.
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Assertion (A) Receptor proteins show selectivity for one chemical messenger over the other.
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Reason (R) All these chemicals increase the nutritive value of the food.
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Assertion (A) Preservative are added to food items.
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Question Text
Assertion (A) All chemicals added to food items are called food preservatives.
Reason (R) All these chemicals increase the nutritive value of the food.
TopicChemistry in Everyday Life
SubjectChemistry
ClassClass 12
Answer TypeText solution:1
Upvotes81