Which of the following defects are shown by \(\text{KCl}\) Crystal?
(A) Schottky defect
(B) Frenkel defect
(C) Metal excess defect
(D) Metal deficiency defect
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The vapour pressure curve of the mixture of ethanol and acetone is higher than its constituents because:

In the following examples, select the primary alkyl halide
(A). 1-Bromo-3-methylbutane
(B). 2-Bromo-2-methylbutane
(C). 3-Bromo propene
(D). Chlorophenyl methane
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In the 3d series of transition elements, the element more likely to exhibit +1 oxidation state is :

The main cause of basicity of oxoacids of phosphorous is :

Arrange the following ligands in the increasing order of their field strength:
(A) en
(B) edta \({ }^{4-}\)
(C) \(S ^{2-}\)
(D) \(OH ^{-}\)
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Which of the following statements are correct?
A. p-Nitroaniline is a stronger base than aniline
B. Aniline is weaker basic than o-nitro aniline
C. Aniline is a weaker base than ethylamine
D. p-methyoxyaniline is stronger base than aniline
E. Aniline is weaker base than ammonia
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If you place blood cells in a solution containing more than 0.9% (mass/volume) sodium chloride, water will flow out of the cells and they will shrink. Such a solution is called

Two galvanometers have identical characteristics. One of them is converted into a milliammeter and the other into a microammeter. The shunt resistance of microammeter as compared to milliammeter will be :

Read the passage carefully and answer the questions
Optically active polyhydroxy aldehydes or ketones or molecules which provide such units on hydrolysis are called carbohydrates. They can be broadly classified as monosaccharides, disaccharides and polysaccharides depending on their behavior towards hydrolysis. They are also classified as reducing or non-reducing sugars. Another class of biomolecules is proteins which are polymers of twenty different amino acids linked by peptide bonds. Amino acids can be classified as acidic, basic or neutral depending on the relative number of amino and carboxyl groups in their molecule. The essential amino acids cannot be synthesized by our body and hence must be provided through diet. Nucleic acids are the polymers of nucleotides which in turn consist of a base, pentose sugar and phosphate. There are two types of nucleic acids namely, DNA and RNA which differ in the composition of sugar and a base.
Four bases present in RNA molecule are:

The excessive use of herbicides, pesticides etc. has resulted in selection of resistant varieties. It is an example of evolution by:

In a given habitat during a given period of time, population density increases if :-

The complex \(\left[ Co \left( NH _3\right)_4\left( NO _2\right)_2\right] Cl\) exhibits:
A. Coordination isomerism
B. Linkage isomerism
C. Solvate isomerism
D. Ionisation isomerism
E. Geometrical isomerism
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