Mega MHT CET Mock Test Part -2 Physics -Chemistry

A particle performs uniform circular motion in a horizontal plane. The radius of the circle is 20 cm. If the centripetal force F is kept constant but the angular velocity is doubled, the new radius of the path will be

For a body moving with constant speed in a horizontal circle, which of the following does not remain constant?

Select the WRONG statement.

The surface tension of two liquids are respectively 24 and 36 dyne cm^-1. The liquids drop from the ends of two tubes of the same radius. The ratio of the weights of the two drops is

A soap bubble of radius 4.0 cm is formed inside another soap bubble of radius 6.0 cm. The radius of an another soap bubble which has the same pressure difference as that between the inside of the smaller and outside of large soap bubble, in meters is

In case of a liquid which does not wet a solid surface, the force of adhesion

A liquid rises to a height of 3.5 cm in a glass capillary ‘A’. Another glass capillary ‘B’ having diameter 70% of capillary ‘A’ is’ immersed in the same liquid. The rise of liquid in capillary ‘B’ is

A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of water in the capillary tube is 0.7 g. Another capillary tube of radius 3r is immersed in water. The mass of water that will rise in this tube is

The speed at which the flow of water in a long cylindrical pipe of diameter 10 cm becomes turbulent is

(The viscosity of water = 1 x 10^-3 Pa.s and for the onset of turbulent flow in a long cylindrical, pipe, Reynolds number = 3000)

When the pressure on the gas is increased to 3, times that of initial value, volume becomes 1/4^th that of initial. Percentage difference in temperature will be

Two samples A and B, of a gas at the same initial temperature and pressure are compressed from volume V to V/3; A isothermally and B adiabatically. The final pressure of A will be

Temperature of an ideal gas, initially at 27 °C, is raised by 15 °C. The rms velocity of the gas molecules will,

Gases exert pressure on the walls of the container because the gas molecules

The molecular weights of oxygen and hydrogen are 32 and 2 respectively. The root mean square velocities of hydrogen and oxygen at N.T.P. are in the ratio

When a gas is in thermal equilibrium, its molecules have

Internal energy of a system is

In a diesel engine the cylinder compresses air from S.T.P. to about 1/12^th the original volume and a pressure of 35 atmosphere. The temperature of compressed air is

At mean positions of a particle executing simple harmonic motion,

The length of a simple pendulum is increased by 69%. The percentage change in its time period is

A particle is executing simple harmonic motion with frequency f. The frequency at which its kinetic energy changes into potential energy is

If two tuning forks A and B are sounded together, they produce 6 beats per second. When A is slightly loaded with wax, they produce 3 beats when sounded again. The frequency of A is 256 Hz. The frequency of B will be

Two waves of same amplitude superimpose to produce two beats per second. What is the ratio of minimum loudness to that of one of the waves?

When a simple harmonic progressive wave is travelling through a medium, then each succeeding particle

A single substance that exists in two or more forms or crystalline structures is said to be ______

If osmotic pressure of sucrose solution is higher than that of urea solution, the sucrose solution , the sucrose solution is ________ to urea solution

Which of the following is strong electrolyte ?

A mixture of two moles of CO and mole of O2 in a closed vessel is ignited to convert CO into CO2 , Then,

In 2 hours, a certain current liberates 0.4 g hydrogen. How many grams of copper can be deposited by the same current flowing for the same time in a CuSO4 solution? (Molar mass of Cu = 63.5 g mol^-1 , H2= 2.0 g mol^-1 )

A first order reaction has a rate constant 0.00813 min-¹ , how long will it take for 60% completion?

In the case of OF2 , oxidation state Of O is _____

Which of the following elements belongs to the first inner transition series?

In which of the following series all the elements are radioactive in nature

In _________ unit cell particles are present at the centre of each of the faces in addition to the corner particles

The No. of particles (Atoms) per units cell in a FCC crystal is

Two solutions A and B have same mole fractions of the solute. If 1 dm³ of A is mixed with 2 dm³ of B, the mole fraction of the solute in the mixture would

The vapour pressure of pure benzene at a certain temperature is 640 mm Hg. A non-volatile solid weighing 2.175 g is added to 39.0 g of benzene. The vapour pressure of the solution is 600 mm Hg. What is the molecular mass of the solid substance?

(NH4)2CO3 is a salt of _______

Which Of the following salts will give highest pH in Water ?

If a 3 mol of an ideal gas is compressed from a volume of of 1 m³ to 10 dm³ at 600k against a pressure of 100kPa. Calculate the work done during this process.

Work done in the process , In an isothermal and reversible process, 1.6 x 10-² kg O2 expands from 10 dm³   to 100 dm³  at 27º C , is (R = 8.314 J /K mol )

Average rate of reaction For reaction below is written as

2SO2 + O2 → 2 SO3

For a chemical reaction rate law is, rate = k [A]² [B]. If [A] is doubled at constant [B], the rate of reaction

The elements of group 17 react with hydrogen to give _____

Most common oxidation states shown by cerium are

Which element from following forms colourless compounds in +2 oxidation state?

Magnetic moment of a metal complex is 5.9 B.M. Number of unpaired electrons in the complex is

Which metal crystallizes in simple cubic structure ?

Which of the following compounds shows both Schottky and Frenkel defect ?

In Frenkel defect

The osmotic pressure of a solution at 27ºC is 2 atm. What will be its osmotic pressure at  100ºC  under similar conditions?

Isotonic solutions are those which have the:

When a liquid is heated its vapour pressure

The following are intensive properties, EXPECT

In an isochoric process, the increase in internal energy is ________

At 25°C molar conductance of 0.2 molar aqueous solution of ammonium hydroxide

12.54 ohm -¹ cm-¹ mol-¹ and at infinite dilution its molar conductance is 238 ohm -¹ cm-¹ mol-¹ .The degree of ionisation of ammonium hydroxide at the same concentration and temperature is

Which among the following is correct for electrolysis of brine solution?

What is standard potential of cell , Ni | Ni²+   (1M )  ||  Cu²+  (1M) | Cu ?

If E°Cu = 0.337 V and E°Ni= -0.236 V

During the electrolysis of molten sodium chloride, the product obtained at cathode is

N2 +3H2 →2NH3

In the reaction,  the rate of disappearance of H2 is 0.06 M/s. The rate of appearance of NH3 is

For zero order reaction, when [A]t is plotted against time (t), the slope of the straight line obtained is equal to

_______occurs in nature as a decay product of thorium and uranium.

What is highest oxidation state exhibited by group 17 elements ?

Which among the following is most reactive ?