Match List-I with List-II

List-I (Immunity barriers)	List-II (Examples)
(A) Physical barriers	(I) Interferons
(B) Cellular barriers	(II) Acid in the stomach
(C) Cytokine barriers	(III) Skin
(D) Physiological barriers	(IV) WBCS

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Read the paragraph and answer the question.
Broadly, genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in the single gene. These disorders are transmitted to the offspring on the same lines as we have studied in the principle of inheritance. The trait may also be linked to the sex chromosome as in case of haemophilia. It is evident that this X-linked recessive trait shows transmission from carrier female of male progeny.
Match List I with List II

List I	List ll
(A) Autosomal dominant trait	(I) Klinefelter's Syndrome
(B) Autosomal recessive trait	(II) Sickle Cell Anaemia
(C) Sex linked recessive trait	(III) Myotonic Dystrophy
(D) Gain of chromosomes	(IV) Haemophilia

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The technology of biogas production was developed in India mainly due to the efforts of -

Prehistoric cave art developed about 18000 years ago. Such cave paintings by prehistoric humans can be seen in India at :

Species -area relationship in South American jungles was studied by -

Arrange the following steps of Polymerase Chain Reaction in correct sequence.
(A) Amplified DNA fragments
(B) Annealing of primers
(C) Extension
(D) Denaturation of dsDNA
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Read the following passage carefully and answer the given questions.
During anaerobic sludge digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable. The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. You must have noticed that bottled fruit juices bought from the market are clearer as compared to those made at home. This is because the bottled juices are clarified by the use of pectinases and proteases. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. The BOD test measures the rate of uptake of oxygen by micro-organisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water.
The bottled juices are clarified by the combination of -

\(\int \frac{\cos x-\sin x}{1+\sin 2 x} d x\) is equal to

A motorbike costing Rs. 1, 25, 000 has a scrap value of Rs. 25, 000.
If the annual depreciation charge is Rs. 12, 500, then the useful life of the bike is (by using linear method):

Arrange the following in increasing order of basic strength in aqueous solution :
(A) \(C _6 H _5 NH _2\)
(B) \(C _2 H _5 NH _2\)
(C) \(\left( C _2 H _5\right)_2 NH\)
(D) \(NH _3\)
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The magnetic field in a plane electromagnetic wave is given by \( B = 3 \times 10^{-7} \sin(1.5z + 5 \times 10^{8}t) \text{ T} \), where \( z \) is in meter and \( t \) is in second. The wavelength of the wave is: (Take \( \pi = 3 \))

Match List-I with List-II.
If the random variable z has the following distribution:

X	0	1	2	otherwise
P(x)	k	k	2k	0

List-l & List-ll

List-I	List-II
(A) k	(I) \(\frac{3}{4}\)
(B) \(P(x \geq 2)\)	(II) \(1 / 4\)
(C) \(P(x \leq 2)\)	(III) \(\frac{1}{2}\)
(D) \(P(0<x \leq 2)\)	(IV) 1

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Read the passage carefully and answer the questions
The transition metals and their compounds are known for their catalytic activity. This activity is ascribed to their ability to adopt multiple oxidation states and to form complexes. Vanadium(V) oxide (in Contact Process), finely divided iron, and nickel (in Catalytic Hydrogenation) are some of the examples. Catalysts at a solid surface involve the formation of bonds between reactant molecules and atoms of the surface of the catalyst (first row transition metals utilise 3d and 4s electrons for bonding). This has the effect of increasing the concentration of the reactants at the catalyst surface and also weakening of the bonds in the reacting molecules (the activation energy is lowering). Also because the transition metal ions can change their oxidation states, they become more effective as catalysts. Reaction between iodide and persulphate ions takes place as follows: \(2I^- + S_2O_8^{2-} \rightarrow I_2 + 2SO_4^{2-}\)
Which of the following catalyses the above reaction?