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Question 1

The correct order in which the – O bond length increases is

• AH₂O < O₂ < O₃
• BO₃ < H₂O₂ < O₂
• CO₂ < O₃ < H₂O₂
• DO₂ < H₂O₂ < O₃

Question 2

What is the major product P in the above reaction?

• A
• B
• C
• D

Question 3

Direction: Each of these questions contains two statements. Assertion (A) and Reason (R). Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.

Assertion (A): Graphite is a good conductor of heat and electricity.
Reason (R):Graphite has all the electrons firmly held together in C - C -bonds.

• AIf both Assertion and Reason are true and Reason is correct explanation of Assertion
• BIf both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• CIf Assertion is true but Reason is false
• DIf both Assertion and Reason are false

Question 4

Formation of polyethylene from calcium carbide takes place asfollows:

 

( )_n
The amount of polythene obtained from 64.1 kg of CaC₂ is

• A7 kg
• B14 kg
• C21 kg
• D28 kg

Question 5

Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be

• Aprimary structure of proteins
• Bsecondary structure of proteins
• Ctertiary structure of proteins
• Dquaternary structure of proteins

Question 6

The anticodon transfer RNA for the messenger RNA codon GCA is

• ATGA
• BGUT
• CAGT
• DCGU

Question 7

Parkinson’s disease is linked to abnormalities in the levels of dopamine in the body. The structure of dopamine is

• A
• B
• C
• D

Question 8

Which one among the following is added to soap to impart antiseptic property?

• ASodium lauryl sulphate
• BSodium dodecyl benzene sulphonates
• CRosin
• DBithional

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