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#photo #ınstagood #picoftheday #instalike #photooftheday #instadaily #photography #likeforlikes #love #instagoodi) A metal with valency one.
ii) Bond formed by transferring electron.
iii) Ion formed by the gain of electrons.
iv) An element having valency zero and is used in metrological balloons.Bond formed between two non-metals is …………………… bond.Isotopes are physically ……………… (same/different)Valency of Na+
is …………………….……………….. is an isotope hydrogen which is radioactive.Cu + HNO3 = Cu(NO3)2 + NO + H2O Define the terms pole, principal axis & centre of curvature with reference
to a spherical mirror.Figure shows a concave mirror with its pole at P, focus F and centre of
curvature C. Draw ray diagram to show the formation of image of an object
OA.Name the two kinds of spherical mirrorsState the effect of a force applied on (i) a non-rigid, and (ii) a rigid body.
How does the effect of the force differ in the two cases ?The heart of a man beats 75 times a minute. What is its
a. frequency
b. time periodA body weighs 1800N on earth. What would be his approximate weight on
moon? Give reason for your answerWhat do you mean by global warming and what causes the rise in
atmospheric temperature?What is sound ? How is it produced?How much force is required to produce an acceleration of 4 m/s2 in a body
of mass 1.6 kg ?