Match List I with List II

LIST - I	LIST - II
A. Zone refining	I. Titanium
B. Mond's process	II. Zinc
C. Electrolytic refining	III. Nickel
D. van-Arkel method	IV. Germanium

Choose the correct answer from the options given below:

The chemical formula of mineral beryl is

Consider the following hypothetical redox reaction
\(\mathrm{A}(s)+2 \mathrm{~B}^{+}(a q) \rightarrow \mathrm{A}^{2+}(a q)+2 \mathrm{~B}(s): E_{\mathrm{cell}}^0=0.295 \mathrm{~V}\)
The equilibrium constant of the reaction at 298 K will be:

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.
Which of the following catalyses the oxidation of SO2 in the manufacture of sulphuric acid?

An inorganic salt taken in a test tube was mixed with freshly prepared ferrous sulphate solution.
Concentrated sulphuric acid was then added along the walls of the test tube.
Predict the formula of the compound formed :

Which one of the following reactions is given by ozone (\(O_3\))?

Based on the data given below, which metal in its +2 oxidation state will not liberate hydrogen from acids ?

Metal	V	Ti	Co	Cr
\(\mathrm{E}^{\circ}\left(\mathrm{M}^{3+} / \mathrm{M}^{2+}\right)\)	-0.26	-0.37	+1.97	-0.41

The set of value of \(x\) for which the angle between the \(\vec{a}=2 x^2 \hat{i}+4 x \hat{j}+\hat{k}\) and \(\vec{b}=7 \hat{i}-2 \hat{j}+x \hat{k}\) is obtuse is :

Read the Passage carefully and answer the the questions
The DNA fragments can be separated by a technique known as gel electrophoresis. Since DNA fragments are negatively charged molecules, they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation. The repeated amplification of DNA is achieved by the use of a thermostable DNA polymerase (isolated from a bacterium, Thermus aquaticus). After completion of the biosynthetic stage, the product has to be subjected through a series of processes before it is ready for marketing as a finished product. The downstream processing and quality control testing vary from product to product. The convention for naming restriction enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated.
In agarose gel electrophoresis, DNA fragments move towards _______ under an electric field through a medium.

\(\int_{\frac{\pi}{6}}^{\frac{\pi}{3}} \frac{d x}{1+\sqrt{\tan x}}\) is equal to:

Which type of interaction is shown by the marine fish and copepods:

Sometimes the change in allele frequency is so different in the new sample of the population in which they become a different species. This phenomenon is known as

Match List-I with List-II

List-I (Physical quantity)	List-II (Unit)
(A) Threshold frequency	(I) J
(B) Planck's constant	(II) V
(C) Work function	(III) 1/s
(D) Stopping potential	(IV) J s

Choose the correct answer from the options given below: