Match List - I with List - II.

List - I	List - II
(A) Buna-S	(I) Vinyl chloride
(B) Neoprene	(II) 1,3-Butadiene and styrene
(C) PVC	(III) Tetra flouroethene
(D) Teflon	(IV) Chloroprene

Choose the correct answer from the options given below :

What is the product of the following reaction?
\(R - CH _2- COOH \xrightarrow[(i i) H _2 O ]{( i ) X _2 / \text { Red phosphorus }( X = Cl , Br )}\) ?

Match List-I with List-II

List-I (Compound)	List-II (Uses)
(A) Diazonium salt	(I) Surfactants
(B) Novocain	(II) Antihistaminic drug
(C) Benadryl	(III) Dentistry
(D) Quaternary ammonium salts	(IV) Dyes

Choose the correct answer from the options given below:

In aldehydes, the carbonyl group is bonded to a carbon and hydrogen, while in ketones it is bonded to two carbon atoms. The carbonyl compounds in which carbonyl group is bonded to oxygen are known as carboxylic acid and their derivatives.
1,3-Diphenylprop-2-en-1-one is produced by the following.

Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, \(H2M\) and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Which of the following is most basic among the following hydrides of group 16?

Given below are reduction potentials :
(A) \(E _{ Cu ^{2+} / Cu }^0=0.34 V\)
(B) \(E _{ Sn ^{2+} / Sn }^0=-0.14 V\)
(C) \(E _{ Zn ^{2+} / Zn }^0=-0.76 V\)
(D) \(E _{ K ^{+} / K }^0=-2.93 V\)
The strongest reducing agent from the above is :

What will happen during the electrolysis of aqueous solution of \(CuSO_4\) by using platinum electrodes?
A. Copper will deposit at cathode.
B. Copper will deposit at anode.
C. Oxygen will be released at anode.
D. Copper will dissolve at anode.
Choose the correct answer from the options given below:

Which of the following statement(s) is/are true for p-type semiconductors?
(A) Holes are minority carriers and pentavalent atoms are the dopants.
(B) Electrons are majority carriers and trivalent atoms are the dopants.
(C) Holes are majority carriers and trivalent atoms are the dopants.
(D) Electrons are minority carriers and trivalent atoms are the dopants.
Choose the correct answer from the options given below:

Analogous structures are formed as a result of :

Read the passage carefully and answer the questions given along
Our immune system plays the major role in preventing diseases when we are exposed to disease-causing agents. Immunity is of two types: (i) Innate immunity and (ii) Acquired immunity. The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The immune system also plays an important role in allergic reactions, auto-immune diseases and organ transplantation. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs are spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa associated lymphoid tissue (MALT). It is important to note that HIV/AIDS is not spread by mere touch or physical contact; it spreads only through body fluids. AIDS has no cure, prevention is the best option. Adolescence is accompanied by several biological and behavioural changes and surveys and statistics show that use of drugs and alcohol has been on the rise especially among the youth. Factors associated with drug and alcohol abuse among adolescents are a child's natural curiosity, stress, the perception among youth that it is 'cool' or progressive to smoke, media exposure and an unstable or unsupportive family structures and peer pressure. It is best to identify the situations that may push an adolescent towards use of drugs or alcohol, and to take remedial measures well in time.
Which one of the following can never be over estimated when it comes to the complete well-being of adolescents?

Read the following paragraph and answer the given questions:
In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition site in the vector will generate several fragments, which will complicate the gene cloning. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. The recombinant plasmids will lose tetracycline resistance due to insertion of foreign DNA but can still be selected out from non-recombinant ones by plating the transformants on tetracycline containing medium.
The recombinants will grow in ampicillin containing medium but not on that containing tetracycline. But, non- recombinants will grow on the medium containing both the antibiotics. In this case, one antibiotic resistance gene helps in selecting the transformants, whereas the other antibiotic resistance gene gets 'inactivated due to insertion' of alien DNA, and helps in selection of recombinants. Origin of replication (ori) is a sequence from where replication starts and any piece of DNA when linked to this sequence can be made to replicate within the host cells. This sequence is also responsible for controlling the copy number of the linked DNA. So, if one wants to recover many copies of the target DNA it should be cloned in a vector whose origin support has high copy number.
In pBR322 'rop' codes for -

\(V_{ p } < V_{ n }\)
\(V_{ p }>V_{ n }\)
\(V_{ p }>V_{ n }\)
\(V_{ p }>V_{ n }\)
A ray of light incident on an equilateral glass prism of refractive index \( \mu = \sqrt{3} \), travels parallel to the base of the prism inside it. What is the angle of incidence for this ray ?

Collision frequency is :