Question

Sunrise School, Bulandshahr
HALF YEARLY EXAMINATION 2020
CLASS X
Time: - 3:00 hours
SUBJECT SCIENCE
MM: 80
SECTION A: question no. 1 to 20 all questions and parts are of one mark
each, the answers of these questions must be given in one word and one
sentence.
Q1: the atomic no. of three element X,Y and Z are 3,22 and 17
respectively. state giving reason which two elements will show similar
chemical properties?​

Answer 1

Answer:

Crop करते ध्यान रखा कर वक्त ध्यान रखा करें

Answer 2

ohh............

thank you for free points