CO is a stronger ligand than Cl^–, because 

(1) CO has π-bonds 

(2) CO is more reactive 

(3) CO is a neutral molecule 

(4) CO is poisonous

Which is true regarding nitrogen? 

(1) Has low ionisation enthalpy 

(2) Ability to form pπ -pπ bonds with itself 

(3) Less electronegative 

(4) d-orbitals are available

The correct statement regarding entropy is, 

(1) At absolute zero temperature, the entropy of a perfectly crystalline substance is +ve 

(2) At 0°C, the entropy of a perfect crystalline solid is zero 

(3) At absolute zero temperature, entropy of a perfectly crystalline solid is zero 

(4) At absolute zero temperature, the entropy of all crystalline substances is zero

The property which is not true about Fluorine is, 

(1) It forms only one oxo acid 

(2) High F-F bond dissociation enthalpy 

(3) Most of its reactions are exothermic 

(4) Highest electronegativity 

Which of the following is incorrect in a galvanic cell? 

(1) Reduction occurs at cathode 

(2) The electrode at which electrons are lost is called cathode 

(3) Oxidation occurs at anode 

(4) The electrode at which electrons are gained is called cathode

Find the mis-match from the following pairs: 

(1) Natural selection → Industrial melanism 

(2) Divergent evolution → thorn of bougainvillia and tendril of cucurbita 

(3) Genetic drift → Constant gene frequency 

(4) Adaptive radiation → Australian marsupials

Reactions in Zeolite catalyst depend on, 

(1) Apertures 

(2) All of these 

(3) Pores 

(4) Size of cavity

Elution means 

(1) making the DNA bands visible under UV radiation 

(2) separation of DNA fragments on agarose gel 

(3) isolating alien DNA from the choice organism 

(4) cutting and extraction of DNA bands from the agarose gel 

Which one of these is not an accessory glands in male reproductive system? 

(1) Cowper’s gland 

(2) Prostate gland 

(3) Bartholin’s gland 

(4) Seminal vesicle

Identify the incorrect statement from the following. 

(1) Response of T-cells is called cell mediated immunity 

(2) B-cells produce antibody 

(3) Macrophages are the phagocytic cells 

(4) Interferons kill viruses