Phenol reacts with sodium hydroxide and carbon dioxide in acidic medium to produce:

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
Which of the following is non-reducing sugar?

Decreasing \(Pk_b\) value of following in solution :
(A) \(CH_3CH_2NH_2\)
(B) \((CH_3CH_2)_2NH\)
(C) \((CH_3CH_2)_3N\)
(D) Aniline (Structure shown)
(E) 4-Methoxyaniline (Structure shown)
Choose the correct answer from the options given below :

Match the type of hybridisation given in List-I with their geometry given in List-II

List-l (Type of hybridisation)	List-II (Geometry)
(A) \(s p^3\)	(I) Trigonal bipyramidal
(B) \(d s p^2\)	(II) Octahedral
(C) \(s p^3 d\)	(III) Square planar
(D) \(s p^3 d^2\)	(IV) Tetrahedral

Choose the correct answer from the options given below :

The order of the following reaction will be :
\(2FeCl_3 + SnCl_2 \rightarrow 2FeCl_2 + SnCl_4\)

Werner was the first to describe the bonding features in coordination compounds. But his theory could not answer basic questions like :
(i) Why only certain elements possess the remarkable property of forming coordination compounds ?
(ii) Why the bonds in coordination compounds have directional properties?
(iii) Why coordination compounds have characteristics magnetic and optical properties ?
Many approaches have been put forth to explain the nature of bonding in coordination compounds viz. Valence Bond Theory (VBT), Crystal Field Theory (CFT), Ligand Field Theory (LFT) and Molecular Orbital Theory (MOT).
We shall focus our attention on elementary treatment of the application of VBT and CFT to coordination compounds.
According to this theory, the metal atom or ion under the influence of ligands can use its ( \(n -1) d , ns np\) or ns, np, nd orbitals for hybridisation
to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar and so on.
These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding.
\(CoCl _3 \cdot 6 NH _3\) gives 3 moles of AgCl on reacting with \(AgNO _3\).
The correct formula for this compound is :

Match List-l with List-II

List-I(Name of Vitamin)	List-II(Deficiency disease)
(A) Vitamin A	(I) Beri Beri
(B) Vitamin B\(_1\)	(II) Scurvy
(C) Vitamin C	(III) Rickets
(D) Vitamin D	(IV) Xerophthalmia

Choose the correct answer from the options given below:

Which one of the given assisted reproductive technologies (ART) involves transfer of fertilized egg into the fallopian tube?

In a pure crystal, the lattice point cannot be occupied by:

Choose the wrong statement.

Two slits are made 0.8 mm apart and the screen is placed 1.5 m away. What should be the width of each slit to obtain 8 maxima of the double slit pattern within the central maximum of the single slit pattern?

The particular solution of the differential equation \(x d y=\left(2 x^2+1\right) d x, x \neq 0\), given that \(y=1\) when \(x=1\) is:

The shortest distance between the following lines :
\(\vec{r}=(\hat{i}+\hat{j}-\hat{k})+s(2 \hat{i}+\hat{j}+\hat{k})\)
\(\vec{r}=(\hat{i}+\hat{j}+2 \hat{k})+t(4 \hat{i}+2 \hat{j}+2 \hat{k})\), where \(s\) and \(t\) are scalars, is :