In a family, there are seven persons, comprising two married couple, S is the only child of N and the granddaughter of L. N is a widow. N and Q are sisters and X is the son-in-law of K, who is the father of Q and the grandfather of ‘C’. How is N related to C?

Which of the following types of insecticides are not used against food grain pests in storage?

Which one of the following is a micro nutrient in the soil?

Water soluble and exchangeable potassium is how much percent of total potassium in soil?

Oxidative phosphorylation occurs at

The total effect of a combination is greater or more prolonged than the sum of the effects of the two taken independently known as which type of effect?

The breakdown of nitrites and nitrates by bacterial activity is known as:

A triploblastic, unsegmented animal with complete alimentary canal could be a

H⁺ and Al³⁺ ions present in non-exchangeable form with organic matter and silicate clays and aluminum hydroxyl ions account for

Soap is prepared by boiling caustic soda with -