Which of the following are the examples of aldol condensation?
A. \(2 CH _3 CHO \xrightarrow{\text { dil. } NaOH } CH _3 CHOHCH _2 CHO\)
B. \(2 CH _3 COCH _3 \xrightarrow{ Ba ( OH )_2} CH _3 COCH _2 C \left( CH _3\right)_2 OH\)
C. \(2 HCHO \xrightarrow{\text { dil. } NaOH } CH _3 OH\)
D. \(C _6 H _5 CHO \xrightarrow{\text { dil. } NaOH } C _6 H _5 CH _2 OH + HCOOH\)
Choose the correct answer from the options given below :

The factor(s) governing the flow of electricity through an electrolytic solution is/are
(A) The nature of inter-ionic attraction.
(B) Temperature
(C) Solvation of ions.
(D) The nature of solvent and its viscosity.
Choose the correct answer from the options given below:

Arrange the following complexes in decreasing order of absorption of wavelength of light in the visible region:
(A) \(\left[ Co ( CN )_6\right]^{3-}\)
(B) \(\left[ CoF _6\right]^{3-}\)
(C) \(\left[ Co \left( H _2 O \right)_6\right]^{3+}\)
(D) \(\left[ Co \left( NH _3\right)_6\right]^{3+}\)
Choose the correct option from below:

Number of unpaired electrons in the square planar [Pt(CN)₄]^2- are :

Read the passage carefully and answer the Questions
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 rate constant of a reaction increases from \(0.02 \mathrm{~s}^{-1}\) to \(0.04 \mathrm{~s}^{-1}\) when the temperature is raised from 500 K to 600 K.
The activation energy \(\left(E_a\right)\) of the reaction is
(Given: \(\log _{10} 2=0.3010\) )

The correct relation for determining the molar mass of solute (\(\text{M}_2\))
using osmotic pressure measurement, is

Match List I with List II

LIST - I	LIST - II
A. Zone refining	I. Titanium
B. Mond's process	II. Zinc
C. Electrolytic refining	III. Nickel
D. van-Arkel method	IV. Germanium

Choose the correct answer from the options given below:

Arrange the following amines in increasing order of basic strength in gaseous phase
(A) \(\left(\mathrm{CH}_3\right)_3 \mathrm{~N}\)
(B) \(\mathrm{CH}_3 \mathrm{NH}_2\)
(C) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2\)
(D) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{NH}_2\)
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions.
Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location and do not spread to other parts of the body and cause little damage. The malignant tumors, on the other hand are a mass of proliferating cells called neoplastic or tumor cells. Transformation of normal cells into cancerous neoplastic cells may be induced by physical, chemical or biological agents. Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause cancer. Cancer-causing viruses are called oncogenic viruses which have viral oncogenes. The substances to which an immune response is produced are called allergens. The antibodies produced to these are of IgE type. Common examples of allergens are mites in dust, pollens, animal dander, etc. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells.
The tumors that remain confined to their original location and do not spread to other parts of the body are:

Identify the regions, where sacred groves are not found?

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When a ligand is bound to a metal ion through a single donor atom, it is said to be a unidentate ligand but when it bind through two donor atoms, then it is said to be didentate ligand and when several donor atoms are present in a single ligand, it is said to be a polydentate ligand. When a dior polydentate ligand uses its two or more donor atoms simultaneously to bind a single metal ion, it is said to be a chelate ligand. The number of such ligating groups is called the denticity of the ligand. ligand which has two different donor atoms and either of the two ligetes in the complex is called ambidentate ligands. The number of ligand donor atoms to which the metal is directly bonded, is called coordination number of the metal ion in the complex. Complexes in which a metal is bound to only one kind of donor groups are known as homoleptic and in which a metal is bound to more than one kind of donor groups are known as heteroleptic complexes.
Which of the following is a chelate complex?

If \(e^x+e^y=e^{x+y}\), then \(\frac{d y}{d x}=\)