Which of the following is a hormone releasing IUD?

Read the following passage carefully and answer the given questions.
Bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. Baculoviruses are pathogens that attack insects and other arthropods. The majority of baculoviruses used as biological control agents are in the genus Nucleopolyhedrovirus. These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects. BOD refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria. The sewage water is treated till the BOD is reduced. Cheese, is one of the oldest food items in which microbes were used. Different varieties of cheese are known by their characteristic texture, flavour and taste. For example, the large holes in 'Swiss cheese' are due to production of a large amount of CO₂ by a bacterium named Propionibacterium sharmanii.
Statins are produced by:

The bond between two successive nucleotides in RNA is

'GEAC' stands for -

Which of the following is not a stop codon?

If a double-stranded DNA has 15% of adenine, find out the percent of cytosine in the DNA ?

Identify the correct sequence of events during menstrual cycle in human.
(A) Next cycle begins
(B) Secretory phase
(C) Follicular phase
(D) Menstruation
Choose the correct answer from the options given below:

The correct arrangement of electromagnetic spectrum in decreasing order of wavelength is :

Amines are reactive in nature, mainly due to difference in electronegativity between Nitrogen and Hydrogen and, due to lone pair of electrons on Nitrogen. Amines behave like nucleophiles and as good lewis bases and there are various reactions to support this. Different degree of amines differ in their reactivity due to steric hinderance and electronic effects. Aromatic amines are less basic due to + R effect, hence have higher pk value than aliphatic amines. Basic strength of amines also depends on stability of corresponding conjugate acid in aqueous medium.
Conjugate acid of which of the following amines is most stable?

The reagent used to convert propanol to 1-bromopropane is:

The linear programming problem : minimise \(z=3 x+2 y\)
subject to the constraints \(x+y \geq 8,3 x+5 y \leq 15, x \geq 0, y \geq 0\)
has

Which of the following statements are correct?
(A) The electric field and magnetic field vectors of an electromagnetic wave are perpendicular to each other and also perpendicular to the direction of propagation of wave.
(B) Short waves are reflected from ionosphere.
(C) Electric field vector, E and magnetic field vector B have the same frequency.
(D) The line integral of magnetic field induction over a closed path is not zero.
Choose the correct answer from the options given below :

In the metallurgy of Al , purified \(Al _2 O _3\) is mixed with \(Na _3 AlF _6\) or \(CaF _2\). The role of \(Na _3 AlF _6\) or \(CaF _2\) is to: