Recent questions in 2002

Which is a reducing sugar : -

asked Jul 23, 2018 by pady_1

1 answer

Which is not true statement : -

asked Jul 23, 2018 by pady_1

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When $CH_3CH_2CHCl_2$ is treated with $NaNH_2$, the product formed is : -
are

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Geometrical isomers differ in : -

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1 answer

are

asked Jul 23, 2018 by pady_1

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In the following reaction product 'P' is :

asked Jul 23, 2018 by pady_1

1 answer

n-propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent : -

asked Jul 23, 2018 by pady_1

1 answer

asked Jul 23, 2018 by pady_1

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IUPAC name of the following is $CH_2$ = CH – $CH_2$ – $CH_2$ – C $\equiv$ CH

asked Jul 23, 2018 by pady_1

1 answer

Zn gives $H_2$ gas with $H_2SO_4$ & HCl but not with $HNO_3$ because :-

asked Jul 23, 2018 by pady_1

1 answer

Which of the following has $p_{\pi}$ – $d_{\pi}$ bonding

asked Jul 23, 2018 by pady_1

1 answer

Which of the following is iso-electronic : -

asked Jul 23, 2018 by pady_1

1 answer

An atom has electronic configuration An atom has electronic configuration $1s^ 2$ $2s^2$ $2p^6$ $3s^2$ $3p^6$ $3d^3$ $4s^2$ , you will place it in which group ?

asked Jul 23, 2018 by pady_1

1 answer

General electronic configuration of lanthanides is

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Which of the following order is wrong : -

asked Jul 23, 2018 by pady_1

1 answer

Which of the following statement is true : -

asked Jul 23, 2018 by pady_1

1 answer

In electrolysis of NaCl when Pt electrode is taken then $H_2$ is liberated at cathode while with Hg cathode it forms sodium amalgam : -

asked Jul 23, 2018 by pady_1

1 answer

Which reaction is not feasible : -

asked Jul 23, 2018 by pady_1

1 answer

2 mole of ideal gas at $27^{\circ}C$ temperature is expanded reversibly from 2 lit. to 20 lit. Find entropy change (R = 2 cal/mol K) : -

asked Jul 23, 2018 by pady_1

1 answer

In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true : -

asked Jul 23, 2018 by pady_1

1 answer

Unit of entropy is : -

asked Jul 23, 2018 by pady_1

1 answer

Vander waal's real gas, act as a ideal gas, at which conditions : -

asked Jul 23, 2018 by pady_1

1 answer

Solution of 0.1N $NH_4 OH$ and 0.1N $NH_4Cl$ has pH 9.25, Then find out $PK_b$ of $NH_4OH$ : -

asked Jul 23, 2018 by pady_1

1 answer

Which has highest pH : -

asked Jul 23, 2018 by pady_1

1 answer

1 M and 2.5 litre NaOH solution mixed with another 0.5 M and 3 litre NaOH solution. Then find out molarity of resultant solution : -

asked Jul 23, 2018 by pady_1

1 answer

Solubility of $MX_2$ – type electrolytes is $0.5 \times 10^{–4}$ Mole/lit. then find out $K_{sp}$ of elctrolytes : -

asked Jul 23, 2018 by pady_1

1 answer

Reaction $BaO_2 (s) \rightleftharpoons BaO (s) + O_2(g)$; $\bigtriangleup H = + ve$. In equilibrium condition. Pressure of $O_2$ is depends on : -

asked Jul 23, 2018 by pady_1

1 answer

Which of the following are suitable for the fusion process : -

asked Jul 23, 2018 by pady_1

0 answers

Identical charges (–q) are placed at each corner of a cube of side 'b' then electrical potential energy of charge (+q) which is placed at centre of cube will be

asked Jul 23, 2018 by pady_1

1 answer

A capacitor of capacity $C_1$ charged upto V volt and then connected to an uncharged capacitor $C_2$. Then final P.D. across each will be

asked Jul 23, 2018 by pady_1

0 answers

To convert a galvanometer into a voltmeter one should connect a : -

asked Jul 23, 2018 by pady_1

2 answers

For a cell terminal P.D. is 2.2V when circuit is open and reduces to 1.8V when cell is connected to a resistance of R = 5$\Omega$. Determine internal resistance of cell (r) is then : -

asked Jul 23, 2018 by pady_1

1 answer

Some charge is being given to a conductor. Then its potential : -

asked Jul 23, 2018 by pady_1

1 answer

A wave travelling in positive X-direction with A = 0.2 m velocity = 360 m/s and $\lambda$ = 60 m, then correct expression for the wave is : -

asked Jul 23, 2018 by pady_1

1 answer

For a transistor $\frac{I_C}{I_E}$ = 0.96, then current gain for common emitter configuration : -

asked Jul 23, 2018 by pady_1

1 answer

If kinetic energy of a body is increased by 300% than percentage change in momentum will be

asked Jul 23, 2018 by pady_1

1 answer

A rod of length is 3m and its mass acting per unit length is driectly proportional to distance x from one of its end then its centre of gravity from th end will be at : -

asked Jul 23, 2018 by pady_1

1 answer

A particle (A) is droped from a height and another particle (B) is projected in horizontal direction with speed of 5 m/s from the same height then correct statement is : -

asked Jul 23, 2018 by pady_1

1 answer

A lift of mass 1000 Kg which is moving with acceleration of 1 $\frac{m}{s^2}$ in upward direction, then the tension developed in string which is connected to lift is : -

asked Jul 23, 2018 by pady_1

2 answers

Consider two rods of same length and different specific heats ($S_1$, $S_2$), conductivities ($K_1$, $K_2$) a area of cross-sections ($A_1$, $A_2$) and both having temperature $T_1$ and $T_2$ at their ends. If rate of lo of heat due to conduction is equal, then :-

asked Jul 23, 2018 by pady_1

1 answer

For a black body at temperature 727ºC, its radiating power is 60 watt and temperature of surrounding is 227ºC. If temperature of black body is changed to 1227ºC then its radiating power will be : -

asked Jul 23, 2018 by pady_1

1 answer

Which of the following is best close to an ideal black body : -

asked Jul 23, 2018 by pady_1

2 answers

The Wien's displacement law express relation between : -

asked Jul 23, 2018 by pady_1

2 answers

A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is 'd' then required focal length of lens placed in between the walls is : -

asked Jul 23, 2018 by pady_1

1 answer

Diameter of human eye lens is 2 mm. What will be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is 5000 Å :-

asked Jul 23, 2018 by pady_1

1 answer

The value of plank's constant is : -

asked Jul 23, 2018 by pady_1

1 answer

For the given incident ray as shown in figure, the condition of total internal reflection of this ray the minimum refractive index of prism will be : - 45Âº incident ray

asked Jul 23, 2018 by pady_1

2 answers

A circular disc is to be made by using iron and aluminium so that it acquired maximum moment of inertia about geometrical axis. It is possible with : -

asked Jul 23, 2018 by pady_1

1 answer

When an oscillator completes 100 oscillation its amplitude reduced to $\frac{1}{3}$ of initial value. What will be its amplitude, when it completes 200 oscillation : -

asked Jul 23, 2018 by pady_1

1 answer

A mass is suspended separately by two different springs in successive order then time period is $t_1$ and $t_2$ respectively. If it is connected by both spring as shown in figure then time period is $t_0$, the correct relation is :

asked Jul 23, 2018 by pady_1

1 answer

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