Question

[10x1=10M]
D) piece of wood
C) a woollen cloth
MUT UND can able to light LED,
Choose the correct answers:
PART - B
14)
is called fake fur.
A)Polyester B)Nylon
D)Rayon
15)Which of the following cannot be charged easily by friction?
C)Acrylic
A)a plastic scale B) a copper rod
16) Food materials are
A)biodegradable B)non-biodegradable C)both D)none
17) The magnitude of destructive earthquakes on the Richter scale is greater than
A)3.0
B)4.0
18)If we burn PET bottle, the result may be
A)softened
B)not softened
19) "The oval window has the surface area
A)1/10 B)2/10 C)2/20
20)The shrillness of a sound is known as
A)pitch
B)vibration
21)Sound can't travel in
D)vaccum
A)solid
C)gas
B)liquid
C)7.0
D)2.0
DA and C
C)cannot be bended
of the eardrum.
D)1/20
(
C)intensity
D)Decibel
(
D)Resistor
22) Pure water is a
A)Electric Conductor B)Semi Conductor C)Insulator
23)The substance used for electrolysis is called
A)electrode B)electrolyte C)electric substance
D)none of these​

Answer 1

Answer:

14 answer is b

Explanation:

15 answer is a

16 answer is a

17 answer is b

18 answer is b

19 answer is c

20 answer is b

21 answer is d

22 answer is a

23 answer is a