PART - 1 CH - 1 Chemical Reactions and Equations — Science STD 10 — Question

......... forest of West Bengal is dominated by Sal trees. (Arabari, evergreen, dry forest)

A ______________ corrective lens is used to rectify near-sightedness. (Concave / diverging, Convex / converging, Bifocal)

The rate of consumption of electric energy with time is called __________ (Electric current, Electric power, Electric charge)

In an electric motor, the split ring acts as…………a (friction, commutator, nodules)

A triangular glass prism has ______________ triangular bases and ______________ rectangular surfaces. (Two, Three, Four)

In the spectrum of white light due to dispersion of it through the prism ______________ coloured light will be seen at the lowest part of spectrum. (Violet, Red, Green)

Electric charge on __________ is taken negative.  (The electron, The proton, The neutron)

Oxides of non-metallic elements are ............ in nature. (acidic, basic, neutral)

In female, every __________ days ovum is released from the ovary. (28, 14, 7)