Which transition metal group is known as coinage metals?

Match List-l with List-ll

List-I	List-II
(A) Gatterman's reaction	(I) Alkyl isocyanide
(B) Carbylamine reaction	(II) Azo Compound
(C) Hoffmann bromamide reaction	(III) Aryl Halide
(D) Coupling reaction	(IV) Primary amine

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\(\Delta G = \Delta H – T\Delta S\)
When \(\Delta H = -ve\) and \(\Delta S = -ve\), then the value of \(\Delta G\) will :

Examples of corrosion include
(A) Rusting of iron
(B) Tarnishing of silver
(C) Green coating on copper and bronze
(D) Zinc coating on iron
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If \(KMnO_4\) is reduced by oxalic acid in the acidic medium, then the oxidation number of \(Mn\) changes from:

In the electrophilic substitution reactions of aniline, the \(- NH _2\) group acts

Answer the question on the basis of passage given below :
A colloid is a heterogeneous system in which a substance is dispersed (dispersed phase) as fine particles in another substance called dispersion medium.
Their particle size is intermediate between that of pure solutions (less than 1 nm ) and suspensions (greater than 1000 nm ).
They are known for interesting properties such as enormous surface area, Tyndall effect, Brownian motion etc.
They are widely used in industries and day to day life.
Some prominent uses of colloids are those in smoke precipitators, purification of water, medicines, cleansers etc.
Stability of a colloid is intermediate between that of a solution and suspension. This stability can be attributed to _____________
A. Presence of charge on the particles of dispersed phase.
B. Prolonged mechanical stirring.
C. Solvation by the dispersion medium.
D. Brownian Motion.
E. Dialysis
Choose the correct answer from the options given below :

In a full wave rectifier, the output voltage obtained is in the shape of pulsating half sinusoids which are unidirectional but not steady. To get a steady d.c. output
(A) An inductor can be use in series with the load resistor
(B) A capacitor of high value of capacitance can be used in parallel with the load resistor
(C) A capacitor of low capacitance can be used in series with the load resistor(D) Only load resistor is enough to filter out the pulses and convert them to d.c.
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Match List-I with List-II

List-I	List-II
(A) Acetone to secondary alcohol	(I) \(CrO _3\)
(B) Ethanol to Diethyl ether	(II) \(Zn\)
(C) Ethanol to ethanal	(III) \(NaBH _4\)
(D) Phenol to Benzene	(Iv) \(H _2 SO _4\) at 413 K

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If A is an invertible matrix of order 2 ; then \(\operatorname{det}\left(A^{-1}\right)\) is equal to:

Read the following passage carefully and answer the given questions.
Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location and do not spread to other parts of the body and cause little damage. The malignant tumors, on the other hand are a mass of proliferating cells called neoplastic or tumor cells. Transformation of normal cells into cancerous neoplastic cells may be induced by physical, chemical or biological agents. Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause cancer. Cancer-causing viruses are called oncogenic viruses which have viral oncogenes. The substances to which an immune response is produced are called allergens. The antibodies produced to these are of IgE type. Common examples of allergens are mites in dust, pollens, animal dander, etc. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells.
The tumors that remain confined to their original location and do not spread to other parts of the body are:

A couple has 3 children each child is equally likely to be a boy or a girl. The probability that the eldest child is a girl glven that they have atleast one boy is :

Let a pair of dice be thrown and the random variable \(X\) be the sum of the numbers that appear on the two dice.
Match List - I with List - II

X	Probability, \(P ( X )\)
(A) 4	(I) \(\frac{1}{6}\)
(B) 5	(II) \(\frac{5}{36}\)
(C) 6	(III) \(\frac{1}{12}\)
(D) 7	(IV) \(\frac{1}{9}\)

Choose the correct answer from the options given below :