Chemistry Fill in the blanks Set 21

Chemistry Fill in the blanks Set 21

1. _______ cloth is suitable for winter season.
Ans: Woollen
 
2. ________ fibre is used in making parachute.
Ans: Synthetic

3. Ag is the symbol of ______
Ans: silver
 
4. The valency of Argon is _____
Ans: zero
 
5. Copper is a _______ valency element.
Ans: variable
 
6. Anode rays were found as a stream of ______ charged particles.
Ans: positively
 
7. _________ is the description of depending the arrangement of various fundamental particles inside an atom.
Ans: Atom model