Which one of the following options will express intermediate skin colour in an individual?

Which of the following technique(s) is/are NOT useful in early detection of cancer?
(A) X-rays radiography
(B) Computed tomography
(C) Widal test
(D) Biopsy and histopathological studies
(E) Magnetic Resonance Imaging
Choose the correct answer from the options given below:

MTP is considered safe up to ___________ weeks of pregnancy.

Steps of Polymerase Chain Reaction (PCR) are given below. Arrange them in the correct sequence.
A. Annealing of primers to the template DNA
B. Isolation of gene of interest
C. Extension of primer end on the template DNA using Taq polymerase
D. Denaturation of template DNA by heating
Choose the correct answer from the options given below:

The Convention on Biological Diversity held in Rio de Janeiro in 1992 is popularly known as

'Barnacles' growing on the back of whale is a classical example of :

Polymerase Chain Reaction (PCR) can be used to:
(A) Detect HIV in AIDS patients
(B) Detect mutations in cancer patients
(C) Observe antibody antigen reaction
(D) Identify some of the genetic disorders
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
Carboxylic acids are the organic compounds which comprise of carboxyl functional group, -COOH. These are generally found in nature, some higher members are known as fatty acids as they occur in natural fats as esters of glycerol. They can be prepared from oxidation of alcohols and aldehydes, hydrolysis of nitriles and amides and Grignard reagents. They are stronger acids than simple phenols and alcohols. but weaker than mineral acids. Substituents affect the acidity of aliphatic and aromatic carboxylic acids. They undergo reactions involving cleavage of -OH and C-OH bond. Carboxylic acids having an alpha hydrogen get halogenated in the presence of red phosphorus to form alpha halo carboxylic acids. The reaction is known as Hell Volhard Zelinsky reaction. Besides these aromatic carboxylic acids undergo electrophilic substitution reactions. They are versatile and are employed in the manufacture of various useful compounds. For example, methanoic acid is used in rubber, textile, dyeing, leather and electroplating industries. Higher fatty acids are used in the manufacture of soaps and detergents. Esters of Benzoic acid are used in perfumery.
Which carboxylic acid will not undergo HVZ reaction?

The integrating factor of differential equation \(\frac{d y}{d x}+y \tan x=\sec x\) is:

If the de Broglie wavelengths for a proton and an \(\alpha\)-particle are equal, then the ratio of their velocities respectively will be :

In a binomial distribution, the probability of getting success is \(1 / 4\) and standard deviation is 3 . Then it's mean is:

Two concentric coils, each of radius \( 2\pi \, \text{cm} \), are placed at right angles to each other. Currents of 3 A and 4 A respectively are flowing through the two coils. The magnetic induction at the center of the coils will be:

Which of the following is not a significant characteristic of a pulse?