Question : Select the synonym of the word 'reproduce' from the sentence.
Many scientific researches have proved that DNA replicates itself in the human body and is an enzyme-based catalyst reaction.

Option 1: Replicates

Option 2: Reaction

Option 3: Proved

Option 4: Researches

Question : HIV often changes its shape due to the presence of an enzyme called

Option 1: Reverse Transcriptase

Option 2: Enterokinase

Option 3: Nucleotidase

Option 4: Nucleoditase

Question : A's salary is 50% more than that of B. Then B's salary is less than that of A by:

Option 1: $50$%

Option 2: $33\frac{1}{3}$%

Option 3: $33\frac{1}{4}$%

Option 4: $44\frac{1}{4}$%

Question : Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select 'No substitution'.

My friend is owing an expensive cell phone.

Option 1: own an expensive cell phone

Option 2: owns an expensive cell phone.

Option 3: No substitution

Option 4: is own an expensive cell phone

Question : The spring balance works on the principle of _______.

Option 1: Boyle's Law

Option 2: Hooke's Law

Option 3: Bernoulli's principle

Option 4: Pascal's Law