The given reaction occurs in a car battery when it is used to produce electricity. Pb + PbO_2 + 2H_2 SO_4 to 2PbSO_4 + 2H_2 O Which of the following statements are incorrect about this reaction? I. Pb is acting as an oxidising agent. II. H_2 SO_4 is acting as a reducing agent. III. The reaction is a precipitation reaction. IV. PbO_2 oxidises Pb to PbSO_4

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?