CBSE
Multiple Choice QuestionsWhich of the following test is not used for testing of proteins ?
Millon's test
Molisch's test
Biuret test
Ninhydrin test
Assertion : In the iodometric titration starch is used as an indicator.
Reason : Starch is a polysaccharide.
If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements.
The safest and the most common alternative of sugar is :
glucose
aspartame
saccharin
cyclodextrin
A catalyst
changes the equilibrium constant
lowers the activation energy
increases the forward and backward reactions at different speeds
follows same mechanism for the reaction
Assertion : Alpha ()-amino acids exist as internal salt in solution as they have amino and carboxylic acid groups in near vicinity.
Reason: H+ ion given by carboxylic group (-COOH) is captured by amino group (-NH2) having lone pair of electrons.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Lysine is least soluble in water in the pH range
3 to 4
5 to 6
6 to 7
8 to 9.
Assertion: Million's test is a test for identification of proteins.
Reason : Millon's reagent is a solution of mercurous nitrate and mercuric nitrate in nitric acid containing little nitrous acid.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
The pair in which both species have iron is
nitrogenase, cytochromes
carboxypeptidase, haemoglobin
haemocyanin, nitrogenase
haemoglobin, cytochromes
Methyl--glucoside and methyl--D-glucoside are
epimers
anomers
enantiomers
conformational diastereomers.
Thymine is
5-methyluracil
4-methyluracil
3-methyluracil
1-methyluracil
