Recently Active Disucss Test Question Questions

n fair die are tossed .What is the probability that all of them show the same number on the top surface ? ...

Reasoning Type STATEMENT-I: The endothermic reactions are favoured at lower temperature and the exothermic reactions are favoured at higher temperature. STATEMENT-II: When a system in equilibrium is disturbed by changing the ...

A quadratic curve passes through (0,9) and touches x axis at (3,0).What is the equation of the curve ? ...

x is a positive real number such that x4+1 = 62x2 . Find (x3+1/x3) ...

Rate of physisorption increases with ...

Which of the following statements is false? ...

A queen is placed at a corner of a chess-board.Two squares other than where the queen is placed on are chosen at random.What is the probability that the chosen squares both are in under attack by the Queen ? ...

Which of the following(s) is(are) correct? ...

In the depression of freezing point experiment, it is found that the ...

Z1 , Z2 are two complex numbers such that |Z1|=3 and |Z2 - 12 - 16i|=20 .What is the sum of minimum and maximum value of |Z1 - Z2| ? ...

Multiple Correct Answers Follow In the dissociation of 2AB [eq] A2+B2 , The degree of dissociation is affected by ...

The elevation is boiling point of a solution of 13.44 g of CuCl2 in 1 kg of water using the following information will be (M CuCl2=134.4 and Kb=0.52 K/molal) ...

Which of the reaction defines ΔHf0? ...

The pH of 0.1 M solution of the following salts increases in the order ...

A solution of Palmitic acid (M= 256) in benzene contains 4.24 g of acid per dm3 . When this solution is dropped on a water surface , benzene evaporates and the acid forms a monomolecular layer film of the solid type . If ...

2NO (g) + O2(g) [eq] 2NO2 (g) ; K1 2NO2 (g) [eq] N2O4 (g) ; K2 2NO(g) + O2 (g) [eq] N2O4 (g) ; K3 which of the following relation is correct ? ...

N2O4 [eq] 2NO2 N2O4 is 20% dissociated at 27°C and 1 atm pressure. Find the % dissociation at 27°C and 0.1 atm pressure ...

In an AP series sum of first 12 terms is equal to the sum of first 18 terms.What is the value of sum of first 30 terms ? ...

The vapour pressure of pure benzene is 639.7 mm of mercury and the vapour pressure of a solution of solute in benzene at the same temperature is 631.9 mm of mercury. The molality of the solution is ...

a,b,c are three positive numbers and are in AP.If abc = 8 , what is the minimum value of b? ...

In the above question , what is the force exerted by the top fluid ? Area of cross-section of the block is S. ...

*Image* A block of density ρ floats in equilibrium in a tank filled with two different liquids as shown.what is the value of 'l' ? ...

*Image* The plot of kinetic energy vs time of a particle performing SHM is shown in above figure.What can be inferred from the graph ? ...

*Image* A particle executes SHM along Y axis according to the equation y = Asinωt.A light source is at a distance d from Y axis and a screen is at a distance 'nd' from Y axis as shown.What is the amplitude of the ...

A ring of total mass M and radius a has a linear mass density λ = λocosφ , φ being the reference angle.What is the gravitational potential produced by the ring at the centre ? ...

*Image* A tank filled with liquid of density ρ is given an acceleration a towards right.The tank is in the shape of a cube of side 'l' and it is closed from all sides.What is the pressure at P ? ...

*Image* In the above system the spring has a mass M and the block has a mass m.The spring constant is K.If the block is given an initial velocity Vo what is the maximum elongation of the spring? ...

*Image* The tank filled with water is rotated about an axis as shown in figure.The left wall and the right wall of the tank are located at a distance r1 and r2 from the axis respectively.During rotation if the height of liqui ...

*Image* Left block is given an initial velocity Vo towards right.Which of the following equation describes the velocity of centre of mass ? ...

What is the probability that a particle doing SHM with amplitude A is at a distance ±A/2 from the mean at a certain instant of time ? ...