Share Facebook Email Telegram WhatsApp Results #1. Which among the following denotes the smallest temperature? 1 ^0C on the fahrenheit scale 1 ^0C on the fahrenheit scale 1^ 0C on the fahrenheit scale 1^ 0C on the fahrenheit scale 1^ 0C on the kelvin scale 1^ 0C on the kelvin scale 1 ^0c on the Celsius scale 1 ^0c on the Celsius scale #2. Heat transfer horizontally within the atmosphere is called ? Conduction Conduction Convection Convection Radiation Radiation None None #3. When ice is heated from 0 0C to 10 0C, the volume of water ? First decreases then increases First decreases then increases First increases then decreases First increases then decreases Increases steadily Increases steadily Decreases steadily Decreases steadily #4. Why can two thin shirts keep us warmer than one thick shirt in winter ? Heat does not radiate Heat does not radiate The air layer between the two shirts acts as an anti – medium The air layer between the two shirts acts as an anti – medium Air layer acts as an conductor between two shirts Air layer acts as an conductor between two shirts None None #5. In the summer season, fan air makes us feel good because? The fan will cool the wind The fan will cool the wind Our sweat evaporates rapidly Our sweat evaporates rapidly Conductivity of air increases Conductivity of air increases None None #6. When a piece of ice floating in a glass of water melts, the water level? Will rise Will rise Will fall down Will fall down Will remain the same Will remain the same None None #7. The main use of sweat is? In controlling body temperature In controlling body temperature In keeping the amount of water in the body balanced In keeping the amount of water in the body balanced Extracting toxins in the body Extracting toxins in the body None None #8. Hand pump water is hot in winter because? Friction creates friction due to which the water is heated Friction creates friction due to which the water is heated Our body is cold during winters, so water looks hot Our body is cold during winters, so water looks hot Both A & B Both A & B None None #9. An electric heater kept in vacuum, is heated continuously? Will stop rising after some time Will stop rising after some time Will go on rising with time Will go on rising with time Will become constant after some time because of loss of heat Will become constant after some time because of loss of heat None None #10. Metal tea pot have wooden handles because? It prevents electric shock It prevents electric shock It gives beauty to the pots It gives beauty to the pots Wood is bad conductor of heat Wood is bad conductor of heat None None Finish
