Page 2 - Home Assignment 1. Subjective and Obj
P. 2
SUBJECTIVE QUESTIONS
Sl. No. Questions Mark Skill
Q.1 There are total …………………… elements and out of them 1 E/R
………….. are naturally occurring.
Q.2 During the formation of mixtures ………….. new substances are 1 Av/U
formed.
Q.3 How would you confirm a colourless liquid given to you is water by 3 Av/A
physical methods?
Q.4 Petroleum does not show a sharp boiling point, what does it mean 3 D/A
and why?
Q.5 a) Write two points of difference between each of the following 5 Av/U
i) Elements and compounds
ii) Mixtures and compounds.
b) Mixtures are impure substances. Justify
NCERT Textbook-Std-IX-Science:
Pg. No. 24 Q. 2
