During the development of human embryo, which of the following hormone is NOT produced by placenta?

Copper ions released by CuTs plays a role in contraception by
A. Increasing phagocytosis of sperms
B. Suppressing fertilizing capacity of sperms
C. Inhibiting ovulation
D. Suppressing the motility of sperms
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In humans, the fertilization takes place at -

Match List-I with List-II

List-I (Enzymes)	List-II (Products)
(A) RNA polymerase I	(I) hnRNA
(B) RNA polymerase III	(II) hydrolysis of lactose
(C) RNA polymerase II	(III) rRNA
(D) \( eta\)-galactosidase	(IV) tRNA, 5SrRNA, snRNA

Choose the correct answer from the options given below:

Which of the following are autosomal recessive trait/ disorder?
(A) Thalassemia
(B) Haemophilia
(C) Sickle cell anaemia
(D) Phenylketonuria
Choose the correct answer from the options given below:

Study the following figure and answer the questions:

Charging of tRNA is also known as

Verhulst-Pearl logistic growth equation can be represented by -

Which of the following combinations are correct?

Enzyme	Final product formed
A. Maltase	Glucose
B. Pepsin	Ammonia and \(CO _2\)
C. Urease	Amino acid
D. Zymase	Ethanol and \(CO _2\)
E. Diastase	Glucose

Choose the correct answer from the options given below :

Match List - I with List - II.

List - I	List - II
(A) Aspergillus niger	(I) Butyric acid
(B) Saccharomyces cerevisiae	(II) Citric acid
(C) Clostridium butylicum	(III) Lactic acid
(D) Lactobacillus	(IV) Ethanol

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Read the passage carefully and answer the questions
Nearly all the transition elements display typical metallic properties such as high tensile strength, ductility, malleability, high thermal and electrical conductivity and metallic lustre. The transition metals (with the exception of Zn, Cd and Hg) are very hard and have low volatility. Their melting and boiling points are high. They have high enthalpies of atomization. lons of the same charge in a given series show progressive decrease in radius with increasing atomic number. However, the variation within a series is quite small. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction which essentially compensates for the expected increase in atomic size with increasing atomic number. The net result of the lanthanoid contraction is that the second and the third d series exhibit similar radii (e.g., Zr 160 pm, Hf 159 pm) and have very similar physical and chemical properties. There is an increase in ionisation enthalpy along each series of the transition elements from left to right. The first ionisation enthalpy, in general, increases, but the magnitude of the increase in the second and third ionisation enthalpies for the successive elements, is much higher along a series. One of the notable features of a transition elements is the great variety of oxidation states these may show in their compounds.
Atomic number of Fe, Co, Ni and Cu are 26, 27, 28 and 29 respectively. Which among them is expected to possess the highest value for the second ionization enthalpy?

A rod AB moves with uniform velocity v in a uniform magnetic field as shown in the figure. Identify the correct statement(s) among the following:

(A) Rod becomes electrically charged.
(B) End A becomes positively charged.
(C) End B becomes positively charged.
(D) Rod becomes hot due to joule's heating.
Choose the correct answer from the options given below:

Which of following reagents will furnish ambident nucleophile?
(A) AgCN
(B) KCN
(C) AgNO2
(D) KNO2
Choose the correct answer from the options given below :

A random variable \(x\) has the following probability distribution.
\(\begin{array}{lllllll}x &1\ 2 \ \ \ 3 \ \ \ 4\ 5\ \ \ 6 \\P(x)_\alpha \ & 0.1\ 0.3 \ \beta\ 0.4\ 0.1\end{array}\)
In the above table, \(P[x=1\) or \(x=4]\) is equal to: