In ruby laser, the stimulated emission is due to transition from

A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is

convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is

Two sources are said to be coherent if they produce waves

Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -

In a common emitter amplifier the input signal is applied across

Adding detergents to water helps in removing dirty greasy stains. This is because
1. It increases greasy stains. This is because
2. It decreases the oil-water surface tension
3. It increases the viscosity of the solution
4. Dirt is held suspended surrounded by detergent molecules

Choose the correct statement (a) for a cricket ball that is spinning clockwise through air
S1 : Statemlines of air are symmetric around the ball.
S2 : The velocity of air above the ball relative to it is larger than that below the ball.
S3 : The velocity of air above the ball relative to it is smaller than that below the ball.
S4 : There is a net upward force on the ball.

Ferromagnetic materials used in a transformer must have

According to Newton’s corpuscular theory, the speed of light is

For the constructive interference the path difference between the two interfering waves must be equal to

The accurate measurement of emf can be obtained using

A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which the following is true about his kinetic energy K and angular momentum L?

10^-6 M NaOH is diluted 100 times. The pH of the diluted base is

In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is

The one which decreases with dilution is

Vapour pressure of pure ‘A’ is 70 mm of Hg at 25^oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25^oC, the vapour pressure of pure ‘B’ at 25^oC is

A 6% solution of urea is isotonic with

In countries nearer to polar region, the roads are sprinkled with CaCl₂. This is

A compound of ‘A’ and ‘B’ crystallises in a cubic lattice in which ‘A’ atoms occupy the lattice points at the corners of the cube. The ‘B’ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is

In electrophilic aromatic substitution reaction, the nitro group is meta directing because it

The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with

The carbon bond length in benzene is

The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is

An organic compound x is oxidised by using acidified K₂Cr₂O₇. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The possible structured of X is

Arrange the following in the increasing of their. Basic strengths CH₃NH₂, (CH₃)₂NH, (CH₃)₂N, NH₃

The respiratory quotient during cellular respiration would depend on

Which of the following is not a green - house gas ?

Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is

An animal, which has both exoskeleton and endoskeleton structures is a

Identify the group, which includes animals all of which give birth to young ones directly?

Compare the statement A and B.
Statement A Blood sugar level falls rapidly after hepatectomy.
Statement B The glycogen of the liver is the principal source of blood sugar.
Select the correct description.

What is/are true about heart wood?
(A) It does not help in water conduction.
(B) It is also called laburnum.
(C) It is dark in colour but very soft.
(D) It has tracheary elements which are filled with tannin, resin, etc.

Compare the statements A and B.
Statement A Auxins promote apical dominance by suppressing the activity of lateral buds.
Statement B In moriculature, periodic pruning of shoot tips is done to make mulberry plants bushy.
Select the correct description.

Bryophytes resemble algae is the following aspects

Stoma opens, when

Which of the following is properly matched ?

A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in

O - demethylation of codeine gives :

A voice recording which was orginally recorded in the phone memory, copied in a memory card. The admissibility of this memory card as an evidence is under :

In British India where was the first chair of professor of medical jurisprudence established :

Which section under Cr.P.C. 1973 allows Magistrate's inquest ?

Which Article of constitution of India declares that the law declared by the supreme court shall be binding on all courts within the territory of India ?

Which section of Indian evidence Act 1872 defines evidence as that which a court of Justice is permitted by law to take into consideration for making clear or ascertaining the truth of the fact or point in issue ?

The correct explanation for SWGDRUG is :

Which of the following options explains the process of sputtering that occur in Hallow Cathode Lamp (HCL) in Atomic absorption spectrometry ?

For a particular vibrational mode to appear in Raman spectrum, which of the following must change ?

Which of the following is the most common instrument for photographic recording of X - ray diffraction patterns ?

A substance that responds in the same manner to the light polarized in any direction is :

Moving belt interface is used as an interface for which of the undermentioned technique ?