4g hischem

. Fill in the blanks. (4- marks )
(a) Displacement is defined as the distance travelled along a _____ direction.
(b) Energy is the _____ to do work.
(c) The normal temperature is _____ ℉.
(d) The ice point is 0℃ in celsius scale and _____ K in kelvin scale.

1. In the equation s =v0t + 1/2at2 ,s,v0 and a are magnitudes of
   Fill in the blanks with the correct word(s) ,terms. (7 marks)
   (a) Sodium hydroxide is commercially produced from saturated solution of ………. by using electrolysis.
   (b) The properties of steel depend upon the ……….. .
   (c) Ammonia gas has a characteristic ………. smell.
   (d) Hydrogen sulphide has weak ………. properties.
   (e) Halogens have essential electronic structure of ………. .
   (f) In the reaction with ammonia, boron trifluoride behave as an ………. .
   (g) The IUPAC name of di-methyl methylene is ………. .