Test: BITSAT Mock Test- 12
150 Questions MCQ Test BITSAT Mock Tests Series & Past Year Papers | Test: BITSAT Mock Test- 12
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In a full wave rectification, if the input frequency is 50 Hz, then the output has a frequency of
In any Bohr orbit of the hydrogen atom, the ratio of kinetic energy to potential energy of the electron is
When X-rays pass through a strong uniform magnetic field, then they
A charged particle accelerated through a potential difference of 100V passes through the uniform electric and magnetic fields so as to experience no deflection. E = 15 x 106 V ∕ m and B = 5 x 103 T . The specific charge e/m is
A certain sample of gas has a volume of 0.2 L measured at 1 atm pressure and 0oC. At the same pressure and at 273oC temperature, its volume will be
A particle of charge 'q' and mass 'm' moving with a velocity 'V' enters into a uniform magnetic field of flux density 'B' acting perpendicular to the motion of the charge the radius of the circular path of particle is
24 cm3 of water flows per second through a capillary tube of radius r cm and length l cm, when connected to a pressure head h cm of water. If a tube of the length l/2 cm and radius r/2 cm is connected to the same pressure head, then volume of water flowing per second through the tube is
The excess pressure inside one soap bubble is three times that of a second bubble. The ratio of the volumes of the first bubble to that of second bubble is
A man stands in front of a hillock and fires a gun. He hears an echo after 1.5s. The distance of the hillock from the man is (velocity of sound in air is 330 m-s⁻1)
The kinetic energy k of a particle moving along a circle of radius R depends on the distance covered s as K = as2 where a is a constant. The force acting on the particle is
Two simple harmonic motions with the same frequency act on a particle at right angles i.e., along x and y-axis. If the two amplitudes are equal and the phase difference is π/2, the resultant motion will be
The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring is
Consider a system of two particles having masses m1 and m2. If the particle of mass m1 is pushed towards the mass centre of particles through a distance d, by what distance would the particle of mass m2 move, so as to keep the mass centre of the particles at the original position?
Suppose the distance of m1 from the centre of mass C is x1 and that of m2 from C is x2
Suppose the mass m2 is moved through a distance d' towards C so as to keep the centre of mass at C
A wheel having moment of inertia 2 kg-m2 about its vertical axis, rotates at the rate of 60 rev-min⁻1 about this axis. The torque, which can stop the wheel's rotation in one minute, would be
The neutral temperature of thermocouple is 350oC, when the cold junction is 0oC. When the cold junction is immersed in a bath of 30oC, the inversion temperature is
The pressure and density of a diatomic gas (γ = 7/5) change adiabatically from (P/d) to (P1,d1). If d1/ d = 32, then P 1/ P is
Which of the following ions has the maximum magnetic moment?
The atomic radius of elements of which of these would be nearly same
The atomic radii of the d- block elements of a given series decrease with increase in atomic number but this decrease becomes small after midway. The decrease in atomic radii in the beginning, is due to an increase in nuclear charge from member to member which tends to reduce the size. At the same time, the addition of extra electrons to (n-1)d orbitals also provides the screening effect. As the number of d-electrons increases, the screening effect increases. Thus, there are operating two effects namely screening effect and nuclear charge effect which oppose each other. In the midway onwards of the series both these effects become nearly equal and thus, there is no change in atomic radii inspite of the fact that atomic number increases gradually.
The alkene formed as a major product in the above elimination reaction is
KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it
Because it absorbs CO2 and increases O2 concentration according to the following reaction
4KO2 + 2CO2 → 2K2CO3 + 3O2
The first three terms in the expansion of (1 + ax)n (n ≠ 0) are 1, 6x and 16x 2. Then the values of a and n are respectively
The circles x2 + y2 - 12x -12y = 0 and x2 + y2 + 6x + 6y = 0
isThe differential equation representing the family of curves y2=2c(x+√c), where c is a positive perimeter, is of
Which one of the following differential equations represents the system of circles touching y-axis at the origin ?
One end of a tower AB is at A on the ground. C is the mid-point of AB and CB subtends an angle α at point P on the ground. If AP=nAB, then which of the relation is true?
The equation of the chord of the hyperbola 25x2 + 16y2 = 400, whose mid-point is (5, 3) is
Which of the following functions is a solution of the differential equation (dy/dx)2 - x (dy/dx) + y = 0?
the value of f(0) so that the function f(x) = (2x - sin⁻1 x)/(2x + tan⁻1 x) is continuous at each point on its domain is
A and B are square matrices of order n x n, then (A - B)2 is equal to
(A - B) x (A - B)
(A - B) x A - (A - B) x B
= A2 - AB - BA + B2
f'(x) = 0 ⇒ x = -1.
Now, f" (-1 - ∈) = 3(-∈)2 > 0, f'(-1 + ∈)2 = 3∈2 > 0.
∴ f(x) has neither a maximum nor a minimum at x = -1.
Let f'(x) = (x) = 3(x+1)2 ∴ (x) = 6(x+1).
(x) = 0 ⇒ x = -1
(-1-∈) = 6(-∈) < 0, (-1-∈) = 6∈ > 0
∴ (x) has a minimum at x = -1
The equation of the directrix to the parabola y2 − 2 x − 6 y − 5 = 0 is
If the line 3x-4y+5=0 is a tangent to the parabola y2=4ax,then a is equal to
(these are other than second storey and one at which they enter the lift).
So required number is = 720
There is only one condition when hall is not illuminaled that is no bulb is switched on
∴ No. of ways of illuminating hall
= 210 - 1 = 1023
If in a triangle ABC, if tan A/2 = 5/6 and tan C/2 = 2/5 , then the sides a, b, c are in
If α, β are the roots of the equation x2 + 2x + 4 = 0, then (1/α3) + (1/β3) is equal to
The sum to infinity of the series 1 + (4/5) + (7/52) + (10/53) + ... is
The range of the function
f (x) = (x2 - x + 1)/(x2 + x + 1) is
All these measures will AUGMENT employment.
DIMINISH means 'to become or make something become smaller, weaker etc'
Though he had lost the battle, he decided not to YIELD TO the enemy.
To give forth by or as if by a natural process, especially by cultivation.
To furnish as return for effort or investment; be productive of
To give up to another; to concede, to surrender
Antonyms disallow, withhold, resist
The teacher ordered Kamal to leave the room and........him to return.
Gandhiji was a humble man known for his...........
To cause troops etc. to spread out in readiness for battle
A religious discourse.
The article was so well written that it MERITED careful study.
Merit as a noun means to superior quality or worth; excellence.
Please do not INTERFERE with my work.
Meaning of Meddle - To intrude into other people's affairs or business; interfere
Observing both the meanings, these both are similar in meaning and replaceable
Morals : Ethical :: Principles : ?
1, 2, 5, 10, 17, 28
Group the following figures into three classes on the basis of identical properties.
(1,4), (2,3) and (5,6) are three different pairs of identical figures.
121, 143, 165, 186, 209
In Asia and much of the third World, trees are still destroyed in the old-fashioned way:they are cut down for fuel and cropland. In Europe , there is new and potentially more deadly culprit. The German call it ' Waldsterben' , the dying forest syndrome. But the diseases is far more than German phenomenon.Since it was first observed by German scientists in the autumn of 1980 , the mysterious malady has raced across Europe, blighting woods in countries as far apart as Sweden and Italy.
Explanations for the epidemic range from a cyclic change in the environment to a baffling form of tree cancer. But the most convincing evidence points to air pollution . Indeed, saving the rapidly deteriorating forests of Europe will probably require a two-pronged strategy : an offensive campaign that includes the breeding of pollution immune trees and a defensive scheme that calls for reductions in toxic emissions. But both will require more money than is currently being spent on such measures, as well as total commitment to protecting the enviornment .
Q. According to this passage, which one of the following statements is correct?
In Asia and much of the third World, trees are still destroyed in the old-fashioned way:they are cut down for fuel and cropland. In Europe , there is new and potentially more deadly culprit. The German call it ' Waldsterben' , the dying forest syndrome. But the diseases is far more than German phenomenon.Since it was first observed by German scientists in the autumn of 1980 , the mysterious malady has raced across Europe, blighting woods in countries as far apart as Sweden and Italy.
Explanations for the epidemic range from a cyclic change in the environment to a baffling form of tree cancer. But the most convincing evidence points to air pollution . Indeed, saving the rapidly deteriorating forests of Europe will probably require a two-pronged strategy : an offensive campaign that includes the breeding of pollution immune trees and a defensive scheme that calls for reductions in toxic emissions. But both will require more money than is currently being spent on such measures, as well as total commitment to protecting the enviornment .
Q. Saving the trees of European forests:
In Asia and much of the third World, trees are still destroyed in the old-fashioned way:they are cut down for fuel and cropland. In Europe , there is new and potentially more deadly culprit. The German call it ' Waldsterben' , the dying forest syndrome. But the diseases is far more than German phenomenon.Since it was first observed by German scientists in the autumn of 1980 , the mysterious malady has raced across Europe, blighting woods in countries as far apart as Sweden and Italy.
Explanations for the epidemic range from a cyclic change in the environment to a baffling form of tree cancer. But the most convincing evidence points to air pollution . Indeed, saving the rapidly deteriorating forests of Europe will probably require a two-pronged strategy : an offensive campaign that includes the breeding of pollution immune trees and a defensive scheme that calls for reductions in toxic emissions. But both will require more money than is currently being spent on such measures, as well as total commitment to protecting the enviornment .
Q. The dying forest syndrome is a disease that :
In Asia and much of the third World, trees are still destroyed in the old-fashioned way:they are cut down for fuel and cropland. In Europe , there is new and potentially more deadly culprit. The German call it ' Waldsterben' , the dying forest syndrome. But the diseases is far more than German phenomenon.Since it was first observed by German scientists in the autumn of 1980 , the mysterious malady has raced across Europe, blighting woods in countries as far apart as Sweden and Italy.
Explanations for the epidemic range from a cyclic change in the environment to a baffling form of tree cancer. But the most convincing evidence points to air pollution . Indeed, saving the rapidly deteriorating forests of Europe will probably require a two-pronged strategy : an offensive campaign that includes the breeding of pollution immune trees and a defensive scheme that calls for reductions in toxic emissions. But both will require more money than is currently being spent on such measures, as well as total commitment to protecting the enviornment .
Q. The writer suggests that :
Select the correct mirror image of the figure (X) from amongst the given alternatives.
Select the correct mirror image of the figure (X) from amongst the given alternatives.
