Which of the following statements is correct for enantiomers?
(A) They exist as a pair of non-superimposable mirror images.
(B) They possess identical physical properties.
(C) They differ with respect to the rotation of plane polarized light.
(D) A mixture containing a 1:1 ratio of enantiomers is optically inactive.
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Choose the correct order of increasing acidic strength of following compounds:
(A) 3-Nitrophenol
(B) Phenol
(C) Propan-1-ol
(D) 3,5-Dinitrophenol
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Aldehydes and ketones can be prepared by:
(A) Oxidation of Alcohol
(B) Dehydrogenation of Alcohol
(C) Ozonolysis of alkenes
(D) Hydration of Alkyne
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Number of \(\text{Co}^{3+}\) ions per 100 oxide ions in the salt \(\text{Co}_{0.94}\text{O}_{1.00}\) will be :

Which of the following will not be sweet in taste?

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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Answer the question on the basis of passage given below :
Formaldehyde is the first member of the aldehydic series. It is present in green leaves of plants where its presence is supposed to be due to the reaction of \(CO_2\) with water in the presence of sunlight and chlorophyll. Commercially, formaldehyde is obtained by the controlled oxidation of methane in the presence of molybdenum oxide (\(MoO\)) acting as a catalyst. Formaldehyde is a constituent of a number of polymers also called resins. These are non volatile solids or semi solids which are obtained directly from certain plants and can be synthesized in the laboratory.
Question: Formaldehyde on reaction with benzaldehyde in basic medium gets converted to:

If \(A=\left[\begin{array}{ccc}3 & -2 & 3 \\ 2 & 1 & -1 \\ 4 & -3 & 2\end{array}\right]\), then the matrix \((\operatorname{adj} A) A\) is equal to

The Hardy - Weinberg Principle says:
(A) Allele frequency in a population is stable and constant.
(B) Allele frequency in a population is unstable.
(C) The gene pool remains constant. It is called genetic equilibrium.
(D) The sum total of all the Allelic frequencies is 1.
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A coin is biased so that the head is three times as likely to occur as tail. If the coin is tossed twice, the mean of the number of tails is:

Ramesh plans to save some amount required after 10 years for higher studies of his son.
He expects the cost of these studies to be Rs. 1,00,000.
How much should be saved at the beginning of each year to accumulate this amount at the end of 10 years, if the interest rate is 12% compounded annually? \(\left(\right.\)Given \(\left.(1.12)^{11}=3.477\right)\)

Match List-I (Name of the Base) with List-II (Structure)

List - I (Name of the Base)	List - II (Structure)
(A). Adenine (A)	(I)
(B). Cytosine (C)	(II)
(C). Thymine (T)	(III)
(D). Guanine (G)	(IV)

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When a dielectric slab is introduced in between the plates of a charged capacitor with battery connected across the plates, following are the observations. Choose which observation is incorrect?