Arrange the following steps of sewage treatment in correct sequence:
A. Flocs consume organic matter and reduces the BOD.
B. Removal of floating debris and grit.
C. Bacterial flocs allowed to sediment.
D. Primary effluent passed into aeration tank and agitated mechanically.
E. Effluent after secondary treatment is released into water bodies.
Choose the correct answer from the options given below:

After ovulation, the remains of Graafian follicle are transformed into :

Identify the cry gene that controls corn borer.

Members of a population are arranged as per their age group. Select the expanding population from the following situations.

Which of the following is a free living, effective biocontrol agent, found very often in the root ecosystem?

Which of the following is TRUE for gel electrophoresis ?

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

Read the following paragraph and answer the given questions.
Cancer detection is based on biopsy and histopathological studies. 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. Do you know why mother's milk is considered very essential for the new-born infant? The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. 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. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused. Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery.
A pregnant female is advised not to discard the yellowish fluid called colostrum, secreted during the initial days of lactation, because it is rich in:

The compound used as a primary standard in volumetric analysis is :

Which is not the salient feature of human genome project-

Arrange the steps in correct order for somatic hybridization.
(A). Isolated protoplasm are fused together
(B). Isolate the protoplasts from a single cell of different plants
(C). Digest the cell wall to isolate the protoplasts
(D). Hybrid protoplasts grown to form new plants
Choose the correct answer from the options given below:

When a light of wavelength 150 nm is incident on silver surface a potential of 3.58 V is required to stop the photoelectrons from reaching the collector plate. Find the potential required to stop photoelectrons when a light of wavelength 200 nm is incident on it ?
(Work function of silver is 4.7 eV)

p-aminoazobenzene is produced from: