heat wave sound

Question 1

si unit heat

Answer 1

joil

Question 2

heat rrequire to conver 1 gm of ice at 0 degree at 100 c

Answer 2

720

Question 3

latent heat of melting

Answer 3

80 cl /gm

Question 4

latent heat of vaporisation

Answer 4

540
22.5*10 5

Question 5

human bdy temp in kelvin

Answer 5

310

Question 6

use as anti freeze for automobile

Answer 6

ethyl glycol

Question 7

when ice melt its volume

Answer 7

decrese

Question 8

if temp increase then ability to hold vapour woul

Answer 8

incrwease

Question 9

if salt is added in water then its boiling and freezing

Answer 9

boling increase and freezing decrease

Question 10

boiling point water at high altitude

Answer 10

at high altitude boiling pint decreawse

Question 11

wall of thurmus bottle coated wi

Answer 11

silver layeer

Question 12

boiling point in high tmp

Answer 12

high

Question 13

water is heated from 0 to 10 then its volume

Answer 13

first decrease and then increase

Question 14

can gamma ray kill living cell

Answer 14

yes

Question 15

which rasy produce vitsmin d

Answer 15

uv rays

Question 16

sound wave

Answer 16

longitudnal wave

Question 17

which wave occur ascillation right angle

Answer 17

transverse wave

Question 18

cosmic rays

Answer 18

highly charge paerticles

Question 19

distance between two successive crest

Answer 19

wavelength

Question 20

velocity of electromagnetic wave

Answer 20

3*10^8 m s

Question 21

longest wave lentgh

Answer 21

radiowaves

Question 22

max energy

Answer 22

x ray

Question 23

use in night vision apparataus

Answer 23

infraredv

Question 24

remote

Answer 24

infra red

Question 25

sound waves travel

Answer 25

in waves

Question 26

increase in temp on sound waves

Answer 26

it wil increse sound speed

Question 27

audible sound waves

Answer 27

20 20k hz

Question 28

infrasonic waves

Answer 28

below 20hz

Question 29

ultra sonic

Answer 29

above 20k hz

Question 30

sound os speed is higher in

Answer 30

steel

Question 31

echo wave

Answer 31

ultrasonic wave

Question 32

ice melting pont at kelvin

Answer 32

273

Question 33

frheniet

Answer 33

32 and 212

Question 34

boiling point of alcohal is less or more than water

Answer 34

alcohal boiling point is less than water

Question 35

latent heat of ice to melt

Answer 35

3.34 10^5 joule

Question 36

safest temp temp for food

Answer 36

4

Question 37

large cold storage use which gas

Answer 37

ammonia

Question 38

when piece of ice floating in glass of water melts then the level of water

Answer 38

remain same

Question 39

sound wave are

Answer 39

longitudnal

Question 40

which wave are perepndicular

Answer 40

transverse

Question 41

which waves has longest wavelength

Answer 41

radio

Question 42

maximum energy

Answer 42

gama rays