## General knowledge question and answer on Science

 1 Earliest thermometer was developed by A.    Celsius B.    Fahrenheit C.    kelvin D.    galileo Answer : D.  galileo Discuss 2 SI unit of temperature is A.    Kelvin B.    celsius C.    Fahrenheit D.    Joule Answer : A.  Kelvin Discuss 3 The correct value of 0º C on the kelvin scale is A.    273K B.    27.315K C.    273.15K D.    270K Answer : C.  273.15K Discuss 4 centigrade and fahrenheit temperatures are the same at A.    -273 B.    -40 C.    -32 D.    40 Answer : B.   -40 Discuss 5 The absolute zero on celsius scale is A.    -200 B.    -273.15 C.    -373.15 D.    none of these Answer : B.   -273.15 Discuss 6 for the measurement of temperature of the order of 400ºC we will perfer A.    mercury thermometer B.    alcohal thermometer  C.    radiation thermometer D.    thermometer Answer : D.  thermometer Discuss 7 Mercury thermometer can be used to measure temperature up to A.    260 ºC B.    100ºC C.    360ºc D.    500ºC Answer : C.  360ºc Discuss 8 The temperature of a gas is measured with a A.    platinum resistance thermometer B.    pyrometer C.    gas thermometer D.    none of these Answer : B.   pyrometer Discuss
 sani said on (Tuesday, July 25, 2017) Inductor of what reactance should be added in series with a resistor of 20 ohm to reduced the power factor by 50%?