Which of the following structures is not a part of the digestive tract of pigs?
Oesophagus
Proventriculus
Duodenum
Colon
Correct answer is B
No explanation has been provided for this answer.
Chlorine is prepared on a large scale by the
electrolysis of concentrated sodium chloride solution
action of manganese (IV) oxide on hot concentrated hydrochloric acid
action of concentrated tetraoxosulphate (IV) acid on sodium chloride
oxidation of concentrated hydrochloric acid with potassium tetraxosulphate (VII)
action of dilute mineral acids on bleaching powder
Correct answer is A
No explanation has been provided for this answer.
Hybrid vigour in crop improvement is brought about through
Introduction
Mass selection
Inbreeding
Cross breeding
Correct answer is D
No explanation has been provided for this answer.
Which of the following oxides is amphoteric?
Na2O
Fe2O3
AI2O3
CaO
CuO
Correct answer is C
No explanation has been provided for this answer.
The use of fungal pathogens to control dodder weed is a
Physical method
Mechanical method
Biological method
Cultural method
Correct answer is C
No explanation has been provided for this answer.