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Back Cross: The crossing of F1 with one of its parents which play important role to develop disease resistance in plants.
Bronze is an alloy of-
A polymeric substance used to make parachute is
The gas used for filling weather balloons is-
The chemical name of'Common salt’
The noble gas used in radiotherapy is
Alum stops bleeding in minor cuts because of
The nucleus of an atom consists of-
The pH of a neutral solution is —
The most reactive among the halogens is-
The nucleus of an atom consists of-
