The karyotype in klinefelter's syndrome is:

Identify the correct sequence of occurrence of geological period from recent to oldest time?
(A) Permian
(B) Jurassic
(C) Silurian
(D) Devonian
Choose the correct answer from the options given below:

Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which of the following cells are involved in phagocytosis and destruction of microbes?

Various types of skin colour in humans is an example of :

Match List-l with List-II

List-l (Pathogens)	List-ll (Diseases)
(A) Wuchereria bancrofti	(I) Ringworms
(B) Rhino Virus	(II) Elephantiasis
(C) Haemophilus influenzae	(III) Common Cold
(D) Epidermophyton	(IV) Pneumonia

Choose the correct answer from the options given below:

Aravalli Hills of Rajasthan and Khasi and Jaintia Hills in Meghalaya are the examples of:

The condition where one species is harmed whereas the other is
unaffected is called

A symmetrical double convex lens is cut into two equal parts by a plane containing the principal axis. The power of the divided lens is :

In a parallel plate capacitor, each plate has an area of \(7 \times 10^{-3} \text{ m}^2\) and the distance between the plates is 2 mm. The space between the plates of the capacitor is filled with mica having dielectric constant 6. If the capacitor is connected to 120 V supply, the charge on each plate of the capacitor will be (Given: permittivity of the vacuum \(\epsilon_0 = 8.85 \times 10^{-12}\) SI unit)

The value of \(\left|\begin{array}{cc}a+i b & c+i d \\ -c+i d & a-i b\end{array}\right|\) is:

The figure is showing the technique of gel electrophoresis. The matrix used in this technique is made out of:

Which of the following is NOT a step of decomposition process?

A bag contains 12 white and 18 red balls. Two balls are drawn in succession without replacement. The probability that the first is red and the second is white is: