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Recent questions tagged q140

The ratio of average speed of an oxygen molecule to the RMS speed of a nitrogen molecule at the same temperature is :

asked Mar 6, 2014 by sharmaaparna1

1 answer

One among the following pairs of compounds is not isomers:

asked Mar 3, 2014 by meena.p

1 answer

Find the parametric form of normal for the circle $x^2+y^2=a^2$

asked Feb 11, 2014 by sreemathi.v

1 answer

Find $\frac{1}{3}+\frac{1}{15}+\frac{1}{15}+\frac{1}{35}+\frac{1}{63}+\frac{1}{99}$ +....upto n terms

asked Jan 21, 2014 by yamini.v

1 answer

Find out the number of angular nodes in the orbital to which the last electron of Cr enter.

asked Jan 17, 2014 by sreemathi.v

1 answer

If $f(x)=[x^2]-[x]^2$ where [.] is the largest integer function then

asked Jan 2, 2014 by sreemathi.v

1 answer

The energy releasing process in which the substrate is oxidised without an external electron acceptor is called :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Aluminium metal becomes passive in :

asked Nov 20, 2013 by thanvigandhi_1

1 answer

Which property among the following is same for both hydrogen and deuterium molecules?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

The half life period of a first order radioactive decay of an element is 5 days. The time ( in days ) taken for 8 g of this element to decay to 1 g is

asked Oct 23, 2013 by thanvigandhi_1

1 answer

Which of the following statements are correct for alkali metal compounds ?

asked Oct 21, 2013 by meena.p

1 answer

pH of a buffer solution decreases by $0.02$ units when $0.12 $ g of acetic acid is added to $250\;ml$ of a buffer solution of acetic acid and Potassium acetate at $27^{\circ}$. The buffer capacity of the solution is :

asked Oct 15, 2013 by meena.p

1 answer

In the reaction

asked Oct 14, 2013 by thanvigandhi_1

1 answer

Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is not formed in these reactions ?

asked Oct 1, 2013 by meena.p

1 answer

A mixture of $He,Ne,Kr$ and $Xe$ is cooled. Which one of them condenses first?

asked Sep 25, 2013 by meena.p

1 answer

Diborane reacts with HCl in the presence of $AlCl_3$ and liberates:

asked Sep 19, 2013 by meena.p

1 answer

A box contains $6$ red and $4$ white balls.If $3$ balls are drawn at random, the probability of getting $2$ white balls without replacement, is

asked May 28, 2013 by poojasapani_1

1 answer

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