Which one of the following is not a buffer solution?
0.8M H2S + 0.8M KHS
2M C6H5NH2 + 2M C6H5NH3-Br-
3M H2CO3 + 3M KHCO3
0.05M KClO4 + 0.05M HClO4
Time required to deposit one millimole of aluminium metal by the passage of 9.65 amperes through aqueous solution of aluminium ion is
30 s
10 s
30,000 s
10,000 s
Propan-1-ol can be prepared from propene by
H2O/H2SO4
Hg(OAc)2/H2O followed by NaBH4
B2H6 followed by H2O2
CH3CO2H/H2SO4
Which one of the following is not a surfactant?
CH3 - (CH2)15 - (CH3)2N+ - CH3Br-
CH3 - (CH2)14 - CH2 - NH2
CH3 - (CH2)16 - CH2OSO2-Na+
OHC - (CH2)14 - CH2 - COO-Na+
Assertion : Glycosides are hydrolysed in acidic conditions.
Reason : Glycosides are acetals.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
D.
If both assertion and reason are false.
Glycosides are formed by treating glucose with CH3OH in the presence of dry HCl gas and can be hydrolysed by strong reagents like HCN, NH2OH and C6H5NHNH2. Also, glycosides are known as hemi-acetals.
Assertion : Benzyl bromide when kept in acetone water it produces benzyl alcohol.
Reason : The reaction follows SN2 mechanism.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Activity of an enzyme is pH dependent.
Reason : Change in pH affects the solubility of the enzyme in water.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Hydroxyketones are not directly used in Grignard reaction.
Reason : Grignard reagents react with hydroxyl group.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Trans-2-butene on reaction with Br2 gives meso-2,3-dibromobutane.
Reason : The reaction involves syn -addition of bromine.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.