1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

Which of the following salts on being dissolved in water gives pH > 7 at 25$$^\circ$$C ?

A
NH$$_4$$CN
B
NH$$_4$$Cl
C
KNO$$_3$$
D
KCN
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

The reagent used in Clemmenson's reduction is

A
alc. KOH
B
aq. KOH
C
Zn-Hg/conc. HCl
D
conc. H$$_2$$SO$$_4$$
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

When KBr is dissolved in water, K$$^+$$ ions are

A
oxidised
B
reduced
C
hydrolysed
D
hydrated
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

The volume of 10N and 4N HCl required to make 1 litre of 7N HCl are

A
0.75 litre of 10N HCl and 0.25 litre of 4N HCl
B
0.80 litre of 10N HCl and 0.20 litre of 4N HCl
C
0.60 litre of 10N HCl and 0.40 litre of 4N HCl
D
0.50 litre of 10N HCl and 0.50 litre of 4N HCl
EXAM MAP