1
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Which among the following statements with respect to carbon is/are correct?

1. Carbon forms the basis for all living organisms and many things we use

2. Carbon shows tetra-valency and the property of catenation

3. Carbon forms covalent bonds with itself and other elements

4. Carbon forms compounds containing triple and tetra bonds between carbon atoms

Select the correct answer using the code given below:

A
1 only
B
1 and 2 only
C
1, 2 and 3
D
2 and 4
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Who among the following is not a recipient of Nobel Prize in Chemistry in 2022?
A
Carolyn R. Bertozzi
B
Benjamin List
C
Morten Meldal
D
K. Barry Sharpless
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which of the hydrocarbons are arranged as per the increasing order of their boiling points?
A
Methane, Butane, Propane, Heptane
B
Propane, Butane, Pentane, Octane
C
Propane, Butane, Heptane, Methane
D
Octane, Ethane, Methane, Propane
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following apparatus is used for separating benzene and water mixture?
A
Round bottom flask
B
Conical flask
C
Separating funnel
D
Dean and Stark apparatus
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