Read the paragraph given below and answer the question.
If a person is born with a hereditary disease, can a corrective therapy be taken for such a disease? Gene therapy is an attempt to do this. Gene therapy is a collection of methods that allows correction of a gene defect that has been diagnosed in a child/embryo. Here genes are inserted into a person's cells and tissues to treat disease.
ADA enzyme is crucial for the functioning of

Which intra uterine contraceptive device is responsible for making the cervix hostile to sperms and uterus unsuitable for implantation?

Which of the following is not a Mendelian Disorder?

Match List I with List II

List I (Acronym)	List ll (Description)
(A) ZIFT	(I) Transfer of an ovum from a donor into the fallopian tube of another female.
(B) GIFT	(II) Semen collection from husband/healthy donor is artificially introduced into the uterus of the female.
(C) IUT	(III) Transfer of zygote or embryo of upto 8 blastomeres into fallopian tube.
(D) IUI	(IV) Transfer of embryo with more than 8 blastomeres into uterus.

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Which one of the following options will express intermediate skin colour in an individual?

Read the following passage carefully and answer the given questions
The separated DNA fragments can be visualized only after staining the DNA with ethidium bromide followed by exposure to UV radiation. Bright orange colored bands of DNA in ethidium bromide stained gel exposed to UV light can be seen. The separated bands of DNA are cut out from the agarose gel and extracted from the gel piece. This step is known as elution. The DNA fragments purified in this way are used in constructing recombinant DNA by joining them with a cloning vector.
Which one of the following techniques is used to separate DNA fragments?

Identify the statements which are incorrect with respect to ribosomes
(A) Ribosome translates the mRNA from its 3' to 5' end.
(B) In its inactive state, ribosome exists as two separate subunits.
(C) The mRNA moves between the two subunits of ribosomes during protein synthesis.
(D) Ribosome consists of messenger RNA and 70 different proteins.
Choose the incorrect answer from the options given below:

Two conducting spheres A and B of radii 'a' and 'b', respectively are charged to have the same electric potential. The ratio of surface charge densities of A and B is

Read the passage carefully and answer the Questions
Aldehydes and ketones are important organic compounds prepared mainly by oxidation of alcohols. Primary alcohols give aldehyde and secondary alcohols yield ketones. Aldehydes can also be formed by partial reduction of acid chlorides, reduction of esters or by Gattermann-Koch reaction. Ketones are prepared by Friedel-Craft's acylation, hydration of alkyne and reaction of Grignard's reagent with nitriles. Chemically, aldehydes and ketones are reactive in nature due to the carbonyl group and undergo nucleophilic addition reactions. Aldehydes are more reactive than ketones and can be oxidized to carboxylic acids, while both can be reduced to alcohols or hydrocarbons and exhibit condensation reaction
The correct IUPAC name of Vanillin is

Match List-I with List-II with their boiling points

LIST – I (Compound name)	LIST – II (Boiling point)
(A) \(CH _3 CH _2 OH\)	(I) 373K
(B) \(CH _3 OCH _3\)	(II) 348K
(C) \(H _2 O\)	(III) 351K
(D) \(CH _3 CH _2 OCH _2 CH _3\)	(IV) 248K

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Choose the incorrect statements from the options given below:
(A) If a monochromatic source is replaced by a source of white light in Young's experiment, then interference fringes will be coloured,
(B) If the screen is moved away from the plane of slits, then the angular width of the fringe will not remain the same,
(C) If separation between slits in Young's experiment is halved, the fringe width becomes double,
(D) The fringe width in Young's experiment is \( \lambda d/D \)
Choose the correct answer from the options given below:

A fair coin is tossed a fixed number of times. If the probability of getting 11 heads is equal to the probability of getting 13 heads, then the probability of getting 2 heads is:

An organic compound (A), C9H10O, gives a 2,4-DNP reaction, negative Tollens' test and iodoform test. On drastic oxidation with chromic acid, it forms B, having molecular formulae, C7H6O2. Identify A and B.