Recent questions tagged 66

The radius of circle the period of revolution initial position and sense of revolution are indicated in the fig

y-projection of the radius vector of rotating particle P is:

asked Jul 8, 2019 by pady_1

1 answer

The effective atomic number of $Cr$ in $[Cr(NH_3)_6]Cl_3$ is :

asked Dec 19, 2018 by pady_1

0 answers

The number of acetylene molecules required to form one molecule of form one molecule of benzene is :

asked Dec 19, 2018 by pady_1

0 answers

A solid organic compound $Y$ on heating is converted into vapour directly; which on cooling solidifies, which of the following is the correct method of purifying it ?

asked Dec 19, 2018 by pady_1

0 answers

Which one of the following is mainly responsible for depletion of ozone layer ?

asked Dec 11, 2018 by pady_1

0 answers

A light string passing over a smooth light pulley connects two blocks of masses $m_1$ and $m_2$ (vertically). If the acceleration of the system is $g/8$, then the ratio of the masses is :

asked Dec 11, 2018 by pady_1

1 answer

A body is moved along a straight line by a machine delivering a constant power. The distance moved by the body in time t is proportional to :

asked Dec 11, 2018 by pady_1

0 answers

The trans-alkenes are formed by the reduction of alkynes with ?

asked Dec 11, 2018 by pady_1

1 answer

The formation of which of the following polymers involves hydrolysis reaction ?

asked Dec 11, 2018 by pady_1

0 answers

If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a dictionary; then the position of the word SMALL is :

asked Dec 11, 2018 by pady_1

1 answer

The number of ways of selecting 15 teams from 15 men and 15 women, such that each team consists of a man and a woman, is :

asked Dec 11, 2018 by pady_1

1 answer

Consider separate solutions of $0.500\; M\; C_2H_5OH(aq),\; 0.100\; M \;Mg_3(PO_4)_2(aq),\; 0.250\; M\; KBr(aq)$ and $0.125 \;M \;Na_3PO_4(aq)$ at $25^{\circ}C$. Which statement is true about these solutions, assuming all salts to be strong electrolytes?

asked Dec 11, 2018 by pady_1

0 answers

A beam of unpolarised light of intensity $I_{_0}$ is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of $45^{\circ}$ relative to that of A. The intensity of the emergent light is:

asked Dec 11, 2018 by pady_1

0 answers

The incorrect expression among the following is :

asked Dec 11, 2018 by pady_1

0 answers

The strongest acid amongst the following compounds is :

asked Dec 11, 2018 by pady_1

0 answers

The area bounded by the curves $y = \cos x$ and $ y = \sin x$ between the ordinates $x=0$ and $x =\frac{3 \pi}{2}$ is

asked Dec 11, 2018 by pady_1

0 answers

If A, B and C are three sets suct that $A \cap B = A \cap C$ and $A \cup B = A \cup C$, then

asked Nov 29, 2018 by pady_1

0 answers

Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10 and 0.005, respectively. The correct order of their protective powers is

asked Nov 29, 2018 by pady_1

0 answers

If $C_P$ and $C_V$ denote the specific heats of nitrgen per unit mass at constant pressure and constant volume respectively, then :

asked Nov 29, 2018 by pady_1

0 answers

The term anomers of glucose refers to :

asked Nov 13, 2018 by pady_1

0 answers

The sum of the series $1 + \frac{1}{4.2!} + \frac{1}{16.4!} + \frac{1}{64.6!}. . . . \infty$ is :

asked Nov 5, 2018 by pady_1

0 answers

A coil of inductance 300 mH and resistance $2 \Omega $ is connected to a source of voltage $2V$. The current reaches half of its steady state value in :

asked Nov 5, 2018 by pady_1

0 answers

In a series of 2n observations, half of them equal a and remaining half equal -a. If the standard deviation of the observations is 2, then |a| equals

asked Nov 5, 2018 by pady_1

0 answers

Which of the followng carbocations is expected to be most stable ?

asked Aug 21, 2018 by pady_1

1 answer

Root hairs develop from the region of :

asked Aug 21, 2018 by pady_1

1 answer

Which of the following structures is homologus to the wing of the birds ?

asked Aug 21, 2018 by pady_1

1 answer

A protoplast is a cell -

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following species has plane triangular shape?

asked Aug 20, 2018 by pady_1

1 answer

Which of the following does not give oxygen on heating ?

asked Aug 20, 2018 by pady_1

1 answer

Standard enthalpy of vapourisation $\bigtriangleup _{vap}H^{\ominus}$ for water at 100°C is $40.66 kJ mol^{-1}$. The internal energy of vaporisation of water at 100°C (in $kJmol^{-1}$) is :

asked Aug 20, 2018 by pady_1

1 answer

The energies $E_1$ and $E_2$ of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e. $\lambda_1$ and $\lambda_2$ will be:

asked Aug 16, 2018 by pady_1

1 answer

In which of the following equilibrium $K_c$and$ K_p$ are not equal?

asked Jul 26, 2018 by pady_1

1 answer

The dissociation constants for acetic acid and HCN at 25ºC are $1.5\times10^5$ and $4.5\times10^{10}$, respectively. The equilibrium constant for the equilibrium - $CN^{-}+CH_3COOH\rightleftharpoons HCN+CH_3COO^{-}$ would be :

asked Jul 26, 2018 by pady_1

0 answers

The correct order of decreasing second ionization enthalpy of Ti = 22, V = 23, Cr = 24 and Mn = 25 is -

asked Jul 26, 2018 by pady_1

1 answer

Calculate the pOH of a solution at $25^{\circ} C$ that contains $1 \times 10^{-10} M$ of hydronium ions, i.e. $H_3O^+$;

asked Jul 26, 2018 by pady_1

1 answer

The general molecular formula, which represents the homologus series of alkanols is:-

asked Jul 25, 2018 by pady_1

1 answer

Which one of the following alkenes will react faster with $H_2$ under catalytic hydrogenation conditions :- [R = Alkyl substituent]

asked Jul 24, 2018 by pady_1

1 answer

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionization energy of $H = 2.18\times 10^{-18} J atom^{-1}$ and $h=6.625\times 10^{-34} Js$):

asked Jul 24, 2018 by pady_1

1 answer

The reaction A $\to$ B follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 hour. What is the time taken for conversion of 0.9 mole of A to produce 0.675 mole of B

asked Jul 24, 2018 by pady_1

2 answers

A solution contains non volatile solute of molecular mass $M_2$ . Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure : - Note :$m_2$ → mass of solute V → Volume of solution p → Osmotic pressure

asked Jul 23, 2018 by pady_1

2 answers

In steam distillation of toluene, the pressure of toluene in vapour is :-

asked Jul 20, 2018 by pady_1

1 answer

For given energy, corresponding wavelength will be $E=3.03\times 10^{-19}$ Joules($h=6.6\times 10^{-34}J\times sec$., $C = 3\times10^8$ m/sec.)

asked Jul 20, 2018 by pady_1

1 answer

Which of the following molecule is not paramagnetic :

asked Jun 15, 2018 by pady_1

1 answer

Type the missing number in this sequence: 5, 25, 125, 625, ------

asked Dec 31, 2015 by pady_1

1 answer

Each bag of guavas weighs 1.76 kgs. If the total weight of a sack containing guavas bags is 68.64 kgs, then how many bags are in the sack?

asked Dec 31, 2015 by pady_1

0 answers

Sunil is reading a book titled 'The World Around Us', and this book has 420 pages. Sunil manages to read $\large\frac{4}{42}$ of the book every day. After 3 days, how many pages has he read?

asked Dec 31, 2015 by pady_1

0 answers

A book seller bought 12 copies of a book. He sold each of them at \$ 20 and thus made a profit of \$ 24 by selling all the books. What was the Cost Price of a book?

asked Dec 31, 2015 by pady_1

0 answers

Ask Questions, Get Answers