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Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen

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Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.

Reason (R): In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(d) In competitive inhibition, inhibitor binds to the active site of the enzyme.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Sodium chloride is added to precipitate soap after saponification.

Reason (R): Hydrolysis of esters of long chain fatty acids by alkali produces soap in colloidal form.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

  (a) Hydrolysis of esters of long chain fatty acids by alkali gives soap a colloid. The process is called saponification.
Sodium chloride is added to precipitate soap which is in colloidal form.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Transparent soaps are made by dissolving soaps in ethanol.

Reason (R): Ethanol makes things invisible.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

  (d) Ethanol removes air and moisture which scatter light.

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Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Chemical messengers are chemicals that enable communi¬cation of message between two neutrons or between neurons and muscles.

Reason (R): Chemicals enter the cell through receptor.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

  (d) Chemicals bind to the receptors sites present on the surface of the membrane on the cell, but never enter the cell through receptor.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Enzymes have active sites that hold substrate molecule for a chemical reaction.

Reason (R): Drugs compete with natural substrate by attaching covalently to the active site of enzyme.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.

 
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(d) Drugs compete with natural substrate by attaching by weak bonds such as ionic bonding. H-bonding, van there Waals interaction, etc., to the active site of the enzyme.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Receptors are crucial to body's communication process.

Reason (R): Receptors are proteins.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

  (a) Neurotransmitters are small molecular which bind to the receptor for a very short time to transfer message to it and depart quickly unchanged after transferring the message, the receptor then forwards the message inside the cell. Receptors are proteins and they participate in the communication system of our body.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Assertion (A): Sulpha drug contain sulphonamide group.

Reason (R): Salvarsan is a sulpha drug.

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong statements and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(d) Salvarsan is an antibacterial drug containing arsenic and it does not contain sulphonamide group.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices:

Assertion (A): Penicillin (G) is an antihistamine.

Reason (R): Penicillin (G) is effective against gram positive as well as gram negative bacteria. 

(a) Assertion and reason both are correct statements but reason does not explain assertion.

(b) Assertion and reason-both are correct statements and reason explains the assertion.

(c) Both assertion and reason are wrong statement.

(d) Assertion is correct statement and reason is wrong statements.

(e) Assertion is wrong stateme

...more
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(c) Penicillin (G) is not a broad spectrum antibiotic so it is not effective against some gram positive and gram negative bacteria.

New answer posted

3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Match the classes of drugs given in Column I with their action given in Column II.

Column I

Column II

(i) Analgesics

(a) Inhibit the growth of microorganisms can be given orally.

(ii) Antiseptics

(b) Treatment of stress

(iii) Antihistamines

(c) Applied to inanimate objects

(iv) Antacids

(d) Prevents the interaction of histamine with its receptor

(v) Tranquilisers

(e) Pain killing effect

(vi) Antibiotics

(f) Applied to diseased skin surfaces

(vii) Disinfectants

(g) Treatment of acidity
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Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (e) (ii) → (f) (iii) → (d) (iv) → (g) (v) → (b) (vi) → (a) (vii) → (c)

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3 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Sixteen Exemplar Solution

Match the class of compounds given in Column I with their functions given in Column II.

Column I

Column II

(i) Antagonists

(a) Communicate message between two neurons and that between neurons to muscle

(ii) Agonists

(b) Bind to the receptor site and inhibit its natural function

(iii) Chemical messenger

(c) Crucial to body's communication process

(iv) Inhibitors

(d) Mimic the natural messenger

(v) Receptors

(e) Inhibit activities of enzymes.
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Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (b) (ii) → (d) (iii) → (a) (iv) → (e) (v) → (c)

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