Enzymes are homogeneous catalyst as they have same physical state as reactant.
CHXII05:SURFACE CHEMISTRY
320711
Which of the following enzyme is used in the conversion of proteins to amino acids?
1 Urease
2 Diastase
3 Maltase
4 Pepsin
Explanation:
Pepsin is used in the conversion of proteins to amino acids.
CHXII05:SURFACE CHEMISTRY
320712
Which of the following statements about enzymes is not correct?
1 Enzymes are in colloidal state.
2 Enzymes are catalysts.
3 Enzymes can catalyse any reaction.
4 Urease is an enzyme.
Explanation:
Each enzyme catalyses only one chemical reaction.
CHXII05:SURFACE CHEMISTRY
320713
Assertion : Activity of an enzyme is \(\mathrm{pH}-\) dependent. Reason : Change in \(\mathrm{pH}\) affects the solubility of the enzyme in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Activity of enzyme increases with increase in \(\mathrm{pH}\) and is maximum of \(\mathrm{pH}=7.4\) and then falls off. Hence, assertion is correct. Correct explanation. With change in \(\mathrm{pH}\), the extent of protonation of the bases changes.
CHXII05:SURFACE CHEMISTRY
320714
Which one of the following statements is incorrect about enzyme catalysis?
1 Enzymes are mostly proteinous in nature.
2 Enzyme action is specific.
3 Enzymes are denatured by ultraviolet rays and at high temperature.
4 Enzymes are least reactive at optimum temperature.
Enzymes are homogeneous catalyst as they have same physical state as reactant.
CHXII05:SURFACE CHEMISTRY
320711
Which of the following enzyme is used in the conversion of proteins to amino acids?
1 Urease
2 Diastase
3 Maltase
4 Pepsin
Explanation:
Pepsin is used in the conversion of proteins to amino acids.
CHXII05:SURFACE CHEMISTRY
320712
Which of the following statements about enzymes is not correct?
1 Enzymes are in colloidal state.
2 Enzymes are catalysts.
3 Enzymes can catalyse any reaction.
4 Urease is an enzyme.
Explanation:
Each enzyme catalyses only one chemical reaction.
CHXII05:SURFACE CHEMISTRY
320713
Assertion : Activity of an enzyme is \(\mathrm{pH}-\) dependent. Reason : Change in \(\mathrm{pH}\) affects the solubility of the enzyme in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Activity of enzyme increases with increase in \(\mathrm{pH}\) and is maximum of \(\mathrm{pH}=7.4\) and then falls off. Hence, assertion is correct. Correct explanation. With change in \(\mathrm{pH}\), the extent of protonation of the bases changes.
CHXII05:SURFACE CHEMISTRY
320714
Which one of the following statements is incorrect about enzyme catalysis?
1 Enzymes are mostly proteinous in nature.
2 Enzyme action is specific.
3 Enzymes are denatured by ultraviolet rays and at high temperature.
4 Enzymes are least reactive at optimum temperature.
Enzymes are homogeneous catalyst as they have same physical state as reactant.
CHXII05:SURFACE CHEMISTRY
320711
Which of the following enzyme is used in the conversion of proteins to amino acids?
1 Urease
2 Diastase
3 Maltase
4 Pepsin
Explanation:
Pepsin is used in the conversion of proteins to amino acids.
CHXII05:SURFACE CHEMISTRY
320712
Which of the following statements about enzymes is not correct?
1 Enzymes are in colloidal state.
2 Enzymes are catalysts.
3 Enzymes can catalyse any reaction.
4 Urease is an enzyme.
Explanation:
Each enzyme catalyses only one chemical reaction.
CHXII05:SURFACE CHEMISTRY
320713
Assertion : Activity of an enzyme is \(\mathrm{pH}-\) dependent. Reason : Change in \(\mathrm{pH}\) affects the solubility of the enzyme in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Activity of enzyme increases with increase in \(\mathrm{pH}\) and is maximum of \(\mathrm{pH}=7.4\) and then falls off. Hence, assertion is correct. Correct explanation. With change in \(\mathrm{pH}\), the extent of protonation of the bases changes.
CHXII05:SURFACE CHEMISTRY
320714
Which one of the following statements is incorrect about enzyme catalysis?
1 Enzymes are mostly proteinous in nature.
2 Enzyme action is specific.
3 Enzymes are denatured by ultraviolet rays and at high temperature.
4 Enzymes are least reactive at optimum temperature.
Enzymes are homogeneous catalyst as they have same physical state as reactant.
CHXII05:SURFACE CHEMISTRY
320711
Which of the following enzyme is used in the conversion of proteins to amino acids?
1 Urease
2 Diastase
3 Maltase
4 Pepsin
Explanation:
Pepsin is used in the conversion of proteins to amino acids.
CHXII05:SURFACE CHEMISTRY
320712
Which of the following statements about enzymes is not correct?
1 Enzymes are in colloidal state.
2 Enzymes are catalysts.
3 Enzymes can catalyse any reaction.
4 Urease is an enzyme.
Explanation:
Each enzyme catalyses only one chemical reaction.
CHXII05:SURFACE CHEMISTRY
320713
Assertion : Activity of an enzyme is \(\mathrm{pH}-\) dependent. Reason : Change in \(\mathrm{pH}\) affects the solubility of the enzyme in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Activity of enzyme increases with increase in \(\mathrm{pH}\) and is maximum of \(\mathrm{pH}=7.4\) and then falls off. Hence, assertion is correct. Correct explanation. With change in \(\mathrm{pH}\), the extent of protonation of the bases changes.
CHXII05:SURFACE CHEMISTRY
320714
Which one of the following statements is incorrect about enzyme catalysis?
1 Enzymes are mostly proteinous in nature.
2 Enzyme action is specific.
3 Enzymes are denatured by ultraviolet rays and at high temperature.
4 Enzymes are least reactive at optimum temperature.
Enzymes are homogeneous catalyst as they have same physical state as reactant.
CHXII05:SURFACE CHEMISTRY
320711
Which of the following enzyme is used in the conversion of proteins to amino acids?
1 Urease
2 Diastase
3 Maltase
4 Pepsin
Explanation:
Pepsin is used in the conversion of proteins to amino acids.
CHXII05:SURFACE CHEMISTRY
320712
Which of the following statements about enzymes is not correct?
1 Enzymes are in colloidal state.
2 Enzymes are catalysts.
3 Enzymes can catalyse any reaction.
4 Urease is an enzyme.
Explanation:
Each enzyme catalyses only one chemical reaction.
CHXII05:SURFACE CHEMISTRY
320713
Assertion : Activity of an enzyme is \(\mathrm{pH}-\) dependent. Reason : Change in \(\mathrm{pH}\) affects the solubility of the enzyme in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Activity of enzyme increases with increase in \(\mathrm{pH}\) and is maximum of \(\mathrm{pH}=7.4\) and then falls off. Hence, assertion is correct. Correct explanation. With change in \(\mathrm{pH}\), the extent of protonation of the bases changes.
CHXII05:SURFACE CHEMISTRY
320714
Which one of the following statements is incorrect about enzyme catalysis?
1 Enzymes are mostly proteinous in nature.
2 Enzyme action is specific.
3 Enzymes are denatured by ultraviolet rays and at high temperature.
4 Enzymes are least reactive at optimum temperature.
