Question
Digging method of weed control is suitable
forSolution
Digging is useful in controlling perennial weeds like Cynodon dactylon which involves the removal of underground storage organs by digging with pick axes and crow bars
Which chemical is used to generate light to weld metals?
Chlorophyll-a is present in all photosynthetic organisms except
What is heavy water?
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
The device which transfer the signal from low resistance region to high resistance region is β
Which of the following vitamins is called a water-soluble vitamin?
Newton's first law of motion gives the concept of β
Why do metals conduct electricity?
Water from soil enters into the root hairs owing to :
NaCl has which kind of bonds?