List of top Questions asked in JKCET

Reaction of sodium acetate with soda lime will produce which of the following?

What will be the potential at the centre of the sphere when a hollow metal sphere of radius $ 10\, cm $ is charged such that the potential on its surface is $ 80\, volts $ ?

Molecular weight of oxygen is $ 32\, amu $ . At $ STP $ , volume of $ 1\, gm $ of oxygen is $ 700 \,cm^3 $ . What is the value of gas constant $ R $ ?

If the heat of $ 110\,\,J $ is added to a gaseous system, whose internal energy is $ 40\,\,J $ , then the amount of external work done is:

A $ 1000\, kHz $ carrier wave is modulated by an audio signal of frequency range $ 600-6000 \,Hz $ . What is the bandwidth of the channel?

Which among the following conformations is the most stable for cyclohexane?

The dimensional formula of coefficient of viscosity can be expressed as $ M^a\, L^bT^c $ . What are the values of $ a $ , $ b $ and $ c $ .

From Freundlich adsorption isotherm, if $ log \frac{x}{m} $ is plotted in $ y $ -axis and $ log\,p $ in $ x $ -axis, the slope will be (Where $ 'k' $ and $ 'n' $ are constants that depend on the nature of the adsorbent and the gas at a particular temperature, $ 'x' $ is the mass of gas adsorbed on mass $ 'm' $ )

Which of the following is a characteristic of Low-Density Polyethylene $ (LDPE) $ ?

A square loop of side $ 10\, cm $ and resistance $ 5 \,Ohm $ is placed vertically in East-West plane. A uniform magnetic field of $ 1 $ Tesla is set across the plane in North-East direction. The magnetic field becomes Zero in $ 700 $ ms at a steady rate. The magnitude of induced $ emf $ during this interval is

Two masses $ m_1 $ and $ m_2 $ are connected by a massless string over a fixed pulley. If $ m_1 > m_2 $ , $ m_1 $ will move downward and $ m_2 $ will move upward. What is the acceleration with which the combination o f two masses will move? ( $ g = $ acceleration due to gravity)

Styrene-butadiene elastomers $ (SBR) $ are the largest-volume synthetic rubber in the world. What is the ratio of butadiene : styrene in $ SBR $ ?

Extent of physisorption of a gas increases with _________ .

$ CHCl_3 $ is a polar solvent while $ CCl_4 $ is a non-polar solvent because $ CCl_4 $ has

What is the total capacitance of the combination when $ 3 $ capacitors each of capacitance $ 9 \,pF $ are connected in series?

The hydroxyl ion concentration in a solution having $ pH $ value $ 3 $ will be

Tilden's reagent is sometimes used for the isolation of terpenoids. Which among the following options is Tilden's reagent?

A zener breakdown occurs in a zener diode when

A quartz prism can produce a minimum deviation $ \delta $ in a light beam. Then the minimum deviation produced by three prisms combined together is

A uniform bar of mass $ M $ and Length $ L $ is bent in the form of an equilateral triangle. Find the moment of inertia of the triangle about an axis passing through the centre of mass and perpendicular to the plane of the triangle.

In a semiconductor, the conductivity increases with the increase in temperature due to

In an experiment using Young?s double slit, what will be the value of fringe width $ \beta $ , if the wavelength is doubled?

The value of magnetic quantum number of the last electron of " $ Na $ " is

Which one of the following is not emitted by radioactive elements ?

What will be the geometry and magnetic moment of the complex $ [NiCl_4]^{2-} $ ?