Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?

1. Xylene

2. Ethylbenzene

3. Toluene

4. Benzene

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 15930

#SCPH05 I Biotechnology

Which of the following is NOT the major function of the serum?

TLS Online TPP Program

#Question id: 10692

#SCPH06 I Botany

TLS Online TPP Program

#Question id: 18593

#SCPH28 | Zoology

Some important events in the history of life on Earth are given below.

A. First dinosaurs appeared.

B. First reptiles appeared.

C. First insect fossils appeared.

D. First toothed birds appearance.

E. First wingless insect appeared.

F. Mammals like reptile arise

Match the above with the geological time periods and choose the correct combination,

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#Question id: 744

#SCPH05 I Biotechnology

In a DNA molecule, deoxyribonucleotides are joined into a polymer by the covalent linkage of a phosphate group. The covalent link termed as:

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#Question id: 800

#SCPH05 I Biotechnology

Following table lists the two major forms of DNA duplexes, conformation of base attached to the sugar and the nature of major and minor grooves.

DNA duplex	Properties
(A)  A form	(i) Syn conformation of the base to sugar
(B)  B form	(ii) Anti conformation of the base to sugar
	(iii) Wide major groove
	(iv) Narrow major groove
	(v) Wide minor groove
	(vi) Narrow minor groove
	(vii) C-3’ endo sugar puckering
	(viii) C-2’ endo sugar puckering