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The no. obtained on reversing the digits is 594 less than the original no.the no. is....we have to solve it by using A.P;how??? ...

Express the following numbers: a)0.23232323 b)0.444444 c)0.2373737373 in the form m/n. How will I do it? ...

If n is a natural number,n^2 x 6n is always divisible by a)6 only b)12 only c)6 & 12 both d)18 only How will I solve this problem? ...

18) *Image* Find angle PRQ a) 45° b) 135° c) 70° d) 35° Your Answer a Correct Answer b Should be 65°, eh? ...

Name SI unit of pressure a) N/m^2 b) Pa c) both d) none ...

If {{a}^{x}}={{b}^{y}}={{(ab)}^{xy}}, then x+y= a) Y b) 0 c) 1 d) 2y ...

In a cell with 4 chromosomes, how many sister chromatids are visible during telophase? a) 0 b) 8 c) 4 d) 16 ...

If s is the charge per unit area on the surface of a conductor, then the electric field intensity at a point on the surface is a) left( frac{sigma }{{{varepsilon }_{0}}} ight) normal to surface b) left( frac{sigma }{2{{vareps ...

An ideal solution has equal mol-fractions of two volatile components A and B. In the vapour above the solution, the mol-fractions of A and B: a) Are both 0.50 b) Are equal but necessarily 0.50 c) Are not very likely to be equ ...

The following is a graph plotted between the vapor pressure of two volatile liquids against their respective mole fractions  Which of the following combinations are correct? *Image* (1) When {{x}_{A}}=1~and~{{x}_{B}}=0,~then ...

A binary liquid (AB) shows positive deviation from Raoult’s law when (1) {{p}_{A}}>p_{A}^{0}X_{A}^{liq}~and~{{p}_{A}}>p_{B}^{0}X_{B}^{liq} (2) Intermolecular forces: A-A,~B-B>A-B (3) ext{ }!!Delta!! ext{ }{{V}_{mix ...

Two metal pieces having a potential difference of 800 V are 0.02 m apart horizontally. A particle of mass 1.96 X 10–15 kg is suspended in equilibrium between the plates. If e is the elementary charge, then charge on the par ...

If {log _{10}}2 = 0.30103,{log _{10}}3 = 0.47712, the number of digits in {3^{12}} imes {2^8} is a) 7 b) 8 c) 9 d) 10 ...

Isn't the answer (d) if the question was "Which of the following is true" ? The displacement is zero since the particle comes to the same point and the average speed is 3m/s. But the question was "Which statement is false" ? ...

A hammer of mass 1kg falls freely from a height of 2 m .Calculate The ke. Of the hammer just before it touches the ground? a) 196 b) 19.6 c) 1.96 d) none ...

A substance that cannot be broken down into a simpler form by ordinary chemical means is called a(n) a) element b) compound c) mixture d) none of the above ...

In a certain town 25% families own a phone and 15% own a car, 65% families own neither a phone nor a car. 2000 families own both a car and a phone. Consider the following statements in this regard: 1.10% families own both a c ...

A charge Q is distributed over two concentric hollow spheres of radii r and (R>r) such that the surface densities are equal.The potential at the common centre a) frac{Q({{R}^{2}}+{{r}^{2}})}{4pi {{varepsilon }_{0}}(R+r)} b ...

A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the ...

Work done by a body in lifting a block upto a height 7 is a) positive b) negative c) zero d) none ...

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An elephant and a pen are thrown from the south city tower. Just before they reach the ground, their velocities will be ________ and the total time taken to reach the ground by both will be ______. a) same, same b) same, diff ...

mark the correct option a) displacement>distance b) distance>displacement c) distance>=displacement d) none ...

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Consider an equilateral triangle ABC with side length 2.1cm. Find the minimum number of equilateral triangles with side length 1cm which can be placed over ΔABC so that it is completely covered. ...

An atom X is represented as follows {}_{21}^{45} ext{X} . The numbers of protons, electrons and neutrons in this atom are: a) 21, 21, 24 b) 21,21,23 c) 20,20,24 d) 20,20,23 ...

A ball is thrown with some velocity from the ground and it takes 6s to return back. calculate the maximum height a) 30m b) 45m c) 10m d) none ...

Which of the following receives oxygenated blood from the lungs? a) Right atrium b) Left atrium c) Right ventricle d) Left ventricle ...

512 + 592 a) 6080 b) 6082 c) 6083 d) 6000 ...

A body starts from rest with uniform acceleration. If its velocity after n second is upsilon , then its displacement in the last two seconds is a) frac{2upsilon left( n+1 ight)}{n} b) frac{upsilon left( n+1 ight)}{n} c) frac{ ...