1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of $$\alpha $$-hydrixy acid. The carbonyl compound is
A
formaldehyde
B
acetaldehyde
C
acetone
D
diethyl ketone
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In a set of reactions propionic acid yielded a compound D.
AIPMT 2006 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 52 English
The structure of D would be
A
CH3CH2NH2
B
CH3CH2CH2NH2
C
CH3CH2CONH2
D
CH3CH2NHCH3
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A coil of inductive reactance 31 $$\Omega $$ has a resistance of 8 $$\Omega $$. It is placed in series with a condenser of capacitative reactance 25 $$\Omega $$. The combination is connected to an a.c. source of 110 V. The power factor of the circuit is
A
0.33
B
0.56
C
0.64
D
0.80
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Two cells, having the same e.m.f. are connected in series through an external resistance R. Cells have internal resistances r1 and r2 (r1 > r2) respectively. When the circuit is closed, the potential difference across the first cell is zero. The value of R is
A
r1 + r2
B
r1 $$-$$ r2
C
$${{{r_1} + {r_2}} \over 2}$$
D
$${{{r_1} - {r_2}} \over 2}$$