Answer the question on basis of passage given below :
A ketone \([A]\) which undergoes haloform reaction gives compound \([B]\) on reduction. Compound
\([B]\) on heating with sulphuric acid gives compound \([C]\) which forms monozonide \([D]\). The compound [D] on hydrolysis in the presence of zinc dust gives compound [E]. 
Compound [E] on oxidation gives \(C _2 H _4 O _2\) [F]
The compound \([ B ]\) formed can be prepared from reaction of aq. KOH . with :

Identify the incorrect statement
A. Bakelite and urea-formaldehyde resins are elastomers
B. Polyamides like nylon 6, nylon 6, 6 are the examples of fibers.
C. Polystyrene, polyvinylchloride and polythene are thermoplastic polymers.
D. Thermoplastic polymers have intermolecular force between elastomers and fibers.
Choose the most appropriate answer from the options given below:

Out of the following given statements, the incorrect statements are;
(A) 2, 2, 6-Trimethylcyclohexanone forms a cyanohydrin in good yield, but the cyclohexanone doesn't.
(B) There are two amino groups in semicarbazide and both can be involved in the formation of semicarbazones.
(C) Mononitration of benzaldehyde will form m-nitrobenzaldehyde.
(D) Mononitration of acetophenone will form m-nitroacetophenone.
Choose the correct answer from the options given below:

The basicity of \(\text{H}_3\text{PO}_4\) is :

Match the ions given in List - I with number of unpaired electrons given in List - II

List - I (Ion)	List-II (Number of unpaired electrons)
(A) \(V ^{ 2 + }\)	(I) 1
(B) \(Cr ^{2+}\)	(II) 4
(C) \(Ti ^{2+}\)	(III) 3
(D) \(Cu ^{2+}\)	(IV) 2

Choose the correct answer from the options given below:

The correct statement(s) regarding the standard electrode potential, \(E^{\circ}\) are
(A) The standard electrode potential changes with the change in the concentration of electrolytes
(B) The standard electrode potential is always zero at 273 K
(C) The concentration of each ion in the solution is unity.
(D) All the gases involved are at 1 bar
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
The major product in the reaction of anisole with bromine in ethanoic acid, is :

Area of the region bounded by the curve \(y=\sqrt{x}\) and lines \(x+y=2, y=0\) is

Converting milk to curd improves its nutritional quality by increasing which of the following vitamins in it:

The electric potential at a point P due to a point charge of \( 9 \, \mu C \) located 10 cm away from point P is

A machine costing Rs. \(2,00,000\) has a useful life of 5 years. The estimated scrap value is Rs. 20,000 . By using straight line method, the annual depreciation is

The process of copying the genetic information from one strand of DNA to RNA is termed as:

If \(A=\left[\begin{array}{ccc}2 & -2 & 1 \\ 0 & 4 & 2\end{array}\right]\) and \(B=\left[\begin{array}{ccc}1 & -2 & 7 \\ 2 & 0 & 6\end{array}\right]\) are two matrices such that 3A - 2B + 4C = O, then matrix C is equal to: