1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
When a bio-chemical reaction is carried out in laboratory, outside the human body in absence of enzyme, then rate of reaction obtained is 10$$-$$6 times, the activation energy of reaction in the presence of enzyme is
A
6/RT
B
P is required
C
different from E$$a$$ obtained in laboratory
D
can't say anything.
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
For the reaction;

2N2O5 $$ \to $$ 4NO2 + O2 rate and rate constant are 1.02 $$ \times $$ 10$$-$$4 and 3.4 $$ \times $$ 10$$-$$5 sec$$-$$1 respectively, then concentration of N2O5 at that time will be
A
1.732
B
3
C
1.02 $$ \times $$ 10$$-$$4
D
3.4 $$ \times $$ 105
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Correct order of 1st ionization potential among following elements Be, B, C, N, O is
A
B < Be < C < O < N
B
B < Be < C < N < O
C
Be < B < C < N < O
D
Be < B < C < O < N
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Which of the following statement is not correct?
A
La(OH)3 is less basic than Lu(OH)3.
B
In lanthanide series ionic radius of Lu+3 ion decreases.
C
La is actually an element of transition series rather lanthanides.
D
Atomic radius of Zn and Hf are same because of lanthanide contraction.
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