Which of the following compounds will give Fehling's solution test?
(A) \(CH _3 CHO\)
(B) \(C _6 H _5 CHO\)
(C) \(CH _3 CH _2 CHO\)
(D) HCHO

Ascorbic Acid is

Carbonyl carbon in acetone is \(\mathrm{sp}^2\) hybridized. The C-O-C bond angle and the geometry of acetone is.......

According to Alexander Zaitsev the most preferred product for dehydrohalogenation of 2-Bromopentane will be :

Arrange the following halocompounds in increasing order of their boiling points
(A) Chloromethane
(B) Bromomethane
(C) Bromoform
(D) Dibromomethane
Choose the correct answer from the options given below:

Answer the question on the basis of passage given below :
Living systems are made up of various complex bio-molecules like carbohydrates, proteins, nucleic acids, lipids etc. Proteins and carbohydrates are essential constituents of our food. Carbohydrates are primarily produced by plants and form a very large group of naturally occurring organic compounds. Some common examples are cane sugar, glucose, starch etc.
Match List I with List II

LIST I	LIST II
A. Carbohydrates	I. Amide linkage
B. Proteins	II. Ester linkage
C. Nucleic acids	III. Ether linkage
D. Lipids	IV. phosphodiester linkage

Choose the correct answer from the options given below:

To avoid the medical condition called 'bends' in scuba divers, the composition of gas filled in the tank is

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap for the semiconductor is :

Match List-I with List-II

List-I (Physical Quantity)	List-II (Formula)
(A) j (current density)	(I) \(\frac{e \tau}{m}\)
(B) \( v_d \) (drift velocity)	(II) \(\frac{n e^2}{m} \tau\)
(C) \( \sigma \) (conductivity)	(III) \(\frac{e}{m} \tau E\)
(D) \( \mu \) (mobility)	(IV) \(\frac{n e^2}{m} \tau E\)

Choose the correct answer from the options given below:

Arrange the following nuclei in the increasing order of their binding energy per nucleon: \( ^4\text{He}, ^6_3\text{Li}, ^{56}_{26}\text{Fe}, ^{238}_{92}\text{U} \)

There are two kinds of nucleases - exonucleases and endonucleases. Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA. The cutting of DNA by restriction endonucleases results in the fragments of DNA. These fragments can be separated by a technique known as gel electrophoresis. Since DNA fragments are negatively charged molecules they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. Small volume cultures cannot yield appreciable quantities of products. To produce in large quantities, the development of bioreactors, where large volumes (100 - 1000 litres) of culture can be processed, was required. Thus, bioreactors can be thought of as vessels in which raw materials are biologically converted into specific products, individual enzymes, etc., using microbial plant, animal or human cells. PCR stands for Polymerase Chain Reaction. In this reaction, multiple copies of the gene (or DNA) of interest are synthesised in vitro using two sets of primers (small chemically synthesised oligonucleotides that are complementary to the regions of DNA) and the enzyme DNA polymerase.
Identify the incorrect fact about the PCR?

Polaroids A and B are placed with their axes perpendicular to each other. Unpolarised light of intensity \(I_0\) is incident on A. A third polaroid C is kept between A and B such that its axis makes an angle of \(30^\circ\) with that of B. The Intensity of transmitted light through B is:

The magnetic susceptibility of the material of a rod is 499. Permeability of vacuum is \( 4\pi \times 10^{-7} \text{ H/m} \). The absolute permeability of the material of the rod is: