1
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Which of the following oxide is amphoteric?
A
SnO2
B
CaO
C
SiO2
D
CO2
2
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Which of the following statements is incorrect?
A
Pure sodium metal dissolves in liquid ammonia to give blue solution.
B
NaOH reacts with glass to give sodium silicate.
C
Aluminium reacts with excess NaOH to give Al(OH)3.
D
NaHCO3 on heating gives Na2CO3.
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
The unit of rate constant for a zero order reaction is
A
mol L$$-$$1 s$$-$$1
B
L mol$$-$$1 s$$-$$1
C
L2 mol$$-$$2 s$$-$$1
D
s$$-$$1
4
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
The half-life of a substance in a certain enzyme-catalysed reaction is 138 s. The time required for the concentration of the substance to fall from 1.28 mg L$$-$$1 to 0.04 mg L$$-$$1 is
A
414 s
B
552 s
C
690 s
D
276 s
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