Which of the following hormones are secreted by placenta?
(A) hCG
(B) hPL
(C) Estrogens
(D) Progestogens
(E) Relaxin
Choose the correct answer from the options given below:

The 'hilum' represents the junction between:

Which one of the followings is an auto-immune disease?

Which of the following statements is true?

Which of the following will have 46 chromosomes?

Which of the following statements regarding Genetically Modified Organisms are not correct?
(A) Crops are more tolerant to abiotic stresses
(B) Pest-resistant crops
(C) Post harvest losses are more
(D) Reduced efficiency of mineral usage by plants
Choose the correct answer from the options given below:

Which of the following show Pleiotropism?

The general solution of the differential equation \(x\left(\frac{d y}{d x}\right)=y+x \tan \left(\frac{y}{x}\right)\) is

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:

The slope of the stopping potential \(V_0\) versus frequency \(\nu\) of the incident radiation plot is (Where symbols have their usual meaning)

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 technique is not very useful to detect the cancers of internal organs?

The karyotype of an individual was found to be 44 + XXY. The individual is suffering from which of the following disorder?

A boat covers 32 km upstream and 36 km downstream in 7 hours.
Also, it covers 40 km upstream and 48 km downstream in 9 hours.
The speed of the boat in still water is :