In the equation \( P = \frac{E}{c} \), where \( P \) is momentum, \( E \) is energy and \( c \) is the speed of light, this equation is valid in which of the following cases:

Which of the following will increase the mobility of charge carriers?

The power of a combination of convex lens of focal length 40 cm and a concave lens of focal length 25 cm when placed in contact is :

In visible light, orange differs from violet as they have

Light of uniform intensity shines perpendicularly on a totally absorbing surface, fully illuminating the surface. If the area of the surface is decreased, what is the effect on radiation pressure ?

Match List-I with List-II

List-I (Potential difference across the terminal of a battery)	List-II (Situations)
(A) V = E	(I) Cell is being charged
(B) V = 0	(II) The internal resistance of a cell is zero
(C) V = E - ir	(III) cell is short-circuited
(D) V = E + ir	(IV) current is being drawn from a cell

Choose the correct answer from the options given below :

The factors on which the deviation produced by a prism depends on are :
(A) Angle of incidence
(B) Angle of Prism
(C) Nature of material of Prism
(D) Colour of light
(E) Wavelength of light
Choose the correct answer from the options given below :

Match List I with List - II. -

List - l	List - II
(A) Colostrum	(l) T-lymphocyte
(B) Histamine	(II) Preformed antibodies
(C) Passive immunisation	(III) Yellowish fluid
(D) Cell-mediated immunity	(IV) Mast cell

Choose the correct answer from the options given below :

Which of the following inequalities holds true?
(A) \(\sqrt{5}+\sqrt{3}>\sqrt{6}+\sqrt{2}\).
(B) If \(a>b\) and \(c<0\), then \(\frac{a}{c}<\frac{b}{c}\).
(C) \(\frac{1}{x^2}>\frac{1}{x}>1\), if \(0<x<1\).
(D) If \(a\) and \(b\) are positive integers and \(\frac{a-b}{6.25}=\frac{4}{2.5}\), then \(b>a\).
Choose the correct answer from the options given below:

Which of the following statement(s) is correct ?
(A). Keratin is an example of fibrous protein.
(B). Fibrous proteins are water-soluble, while globular proteins are water-insoluble.
(C). Polypeptide chains in fibrous proteins run parallel and are held together by hydrogen and disulphide bonds.
(D). Insulin and albumins are common examples of globular proteins.
Choose the correct answer from the options given below:

Read the passage carefully and answer the Questions
Amines are classified as primary \(\left(1^{\circ}\right)\), secondary \(\left(2^{\circ}\right)\) and tertiary \(\left(3^{\circ}\right)\) depending upon the number of hydrogen atoms replaced by alkyl or aryl groups in ammonia molecules. Aliphatic amines are a stronger bases due to \(+I\) effect of an alkyl groups.
Intermolecular hydrogen bonding in primary and secondary amines affects the boiling points of amines. The intermolecular association is more in primary amines than in secondary amines as there are more number of hydrogen atoms available for hydrogen bond formation. Nitro compounds are reduced to amines by passing hydrogen gas in the presence of finely divided nickel, palladium or platinum and also by reduction with metals in an acidic medium. Gabriel synthesis is used for the preparation of primary amines. Primary amines react with nitrous acid to give unstable diazonium-salts which can be used to synthesize a variety of compounds.
The compound having the highest boiling point is

A pair of dice is thrown 5 times. If getting a total of 7 is considered a success, then the probability of at least 3 successes is :

The area bounded by the curve \(|x|+y=1\) and the axis of \(x\) is :