1
IIT-JEE 2012 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

With respect to graphite and diamond, which of the statement(s) given below is(are) correct?

A
Graphite is harder than diamond.
B
Graphite has higher electrical conductivity than diamond.
C
Graphite has higher thermal conductivity than diamond.
D
Graphite has higher C-C bond order than diamond.
2
IIT-JEE 2012 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is(are) correct?

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 6 English 1

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 6 English 2

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 6 English 3

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 6 English 4

A
I is physisorption and II is chemisorption.
B
I is physisorption and III is chemisorption.
C
IV is chemisorption and II is chemisorption.
D
IV is chemisorption and III is chemisorption.
3
IIT-JEE 2012 Paper 2 Offline
MCQ (Single Correct Answer)
+4
-1
Let $${{a_n}}$$ denote the number of all n-digit positive integers formed by the digits 0, 1 or both such that no consecutive digits in them are 0.Let $${{b_n}}$$ = the number of such n-digit integers ending with digit 1 and $${{c_n}}$$ =the number of such n-digit integers ending with digit 0.

The value of $${{b_6}}$$ is

A
7
B
8
C
9
D
11
4
IIT-JEE 2012 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
If the straight lines $$\,{{x - 1} \over 2} = {{y + 1} \over k} = {z \over 2}$$ and $${{x + 1} \over 5} = {{y + 1} \over 2} = {z \over k}$$ are coplanar, then the plane (s) containing these two lines is (are)
A
$$y+2z=-1$$
B
$$y+z=-1$$
C
$$y-z=-1$$
D
$$y-2z=-1$$
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