Correct electronic configuration of Cu and Cr are _________

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The term vitamin was coined from the word vital +amine since the earlier identifiedc ompounds had amino groups. Later work showed that most of them didn't contain amino groups. They are very essential for the body. They has to be taken various diet or in the form of medicines also.
Vitamins are classified into two groups depending upon their solubility in water or fat.
Fat soluble vitamins are soluble in fat and oils but insoluble in water. They are stored in liver and adipose (fat storing) tissues Water-soluble vitamins are soluble in water. These must be supplied regularly in diet because they are readily excreted in urine and cannot be stored in our body.
What are the sources of Vitamin C?

The actual density of a crystal of NaCl is observed to be lower than the expected value. It is caused due to the presence of :

In a reaction :
\(MnO _4^{-}+8 H ^{+}+5 e^{-} \rightarrow \underline{ A }+ H _2 O\)
A stands for :

Which of the following compound(s) on being warmed with \(I_2\) solution and NaOH , will give Iodoform?
A. \(CH _3 CH _2 OH\)
B. \(CH _3 COCH _3\)
C. \(H _3 C - CHOH - CH _3\)
D. \(CH _3 OH\)
Choose the correct option

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The decomposition of \(N_2O_5\ (g)\) is given as
\(N_2O_5(g) \rightarrow 2NO_2(g) + \frac{1}{2}O_2(g)\)
The above reaction is found to be of first order.
Select the correct statement for the half life of the given reaction

Internal acid base reaction of amino acids is due to formation of:

Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 minutes?

Two charged conducting spheres of radii a and b are connected by a wire. The ratio of the electric fields at their surfaces respectively, is

Ortho and Para nitrophenols can be separated by steam distillation. This is because

Identify X in the following nuclear reaction:
\( {}_{6}^{12}C + {}_{1}^{1}H \rightarrow X \)

Match List I with List II

List I (Terms)	List ll (Features)
(A) Natality	(I) Exit of individuals
(B) Mortality	(II) Entry of individuals
(C) Immigration	(III) Death rate
(D) Emigration	(IV) Birth rate

Choose the correct answer from the options given below:

Two sitar strings A and B playing a note are slightly out of tune and produce beats of frequency 5 Hz. The tension in string B is slightly increased and beat frequency becomes 3 Hz. What is the original frequency of B if frequency of A is 427 Hz?