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The first type II restriction endonuclease discovered that could cut dsDNA specific site was:
1. EcoRI
2. SmaI
3. Hind II
4. Hind III

For the stability of the organic compounds, Oparin opined that probably:
1. UV radiation never reached the surface of the primeval Earth
2. the primeval Earth was in a molten state
3. the primeval Earth atmosphere was reducing rather than oxidizing
4. plenty of energy sources were available for chemical reactions to occur

Identify the incorrect statement:
(1) In addition to recombination, mutation is another phenomeonon that leads to variation in DNA.
(2) Chromosomal aberrations are commonly observed in cancer cells.
(3) A classical example of a point mutation is sickle cell anaemia.
(4) Non ionising radiations cannot be mutations. 

Pedigree analysis is resorted to for genetic analysis in humans rather than conventional genetic methods because:
I. Choice matings are not possible
II. Number of progeny is limited
Of the two statements:
(1) Only I is correct
(2) Only II is correct
(3) Both I and II are correct
(4) Both I and II are incorrect

Lanthanoid which is radioactive is:
1. Promethium
2. Europium
3. Plutonium
4. Neptunium

Which of the following has a negative slope?
       
1. C $\to$CO
2. Fe $\to$Fe₂O₃
3. Mg $\to$MgO
4. All of the above

Which is not hydrolysed with water?
(1) PCl₃
(2) NF₃
(3) NCl₃
(4) BCl₃

A coil of resistance 20$\Omega$ and inductance 5H has been connected to a 200 V battery. The maximum energy stored in the coil is
1. 250 J
2. 125 J
3. 500 J
4. 100 J

An alternating current is given as \(i = i_1 \cos\omega t+i_2\sin\omega t\). The RMS current is given by;
1. \(\dfrac{i_1+i_2}{\sqrt{2}}\)
2. \(\dfrac{(i_1+i_2)^2}{\sqrt{2}}\)
3. \(\sqrt{\dfrac{i_1^2+i^2_2}{2}}\)
4. \(\dfrac{\sqrt{i_1^2+i^2_2}}{2}\)