Which of the following gases is obtained by the reaction of
copper with dilute nitric acid is
1 NO2
2 N2O5
3 O2
4 NO
what is defination of conductivity? How much conductivity of water ? what is effect when conductity of water low or high?
Which of the following is used as a coolant in nuclear reactors? 1 Heavy water 2 Cadmium 3 Liquid sodium 4 None of these
2 Answers WBCS West Bengal Civil Service,
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
Reaction of alcohol, with a carboxylic acid is known as 1 Substitution Reaction 2 Addition reaction 3 Esterification 4 Hydrogenation
different types of satellite?
i done G.N.M(General Nursing & Midwifery) so Howmany Sellery i will Get. And Which post in Hospital.
example for navigation satellite?
Difference between Respiration and Photosynthesis ?
In which year, atmospheric observations using balloons started?
Liquefied Petroleum Gas consists of mainly 1 Methane, ethane and hexane 2 Ethane, hexane and noname 3 Methane, butane and propane 4 Methane, hexane and nonane
how is electricity converted from the potential energy of water falling from dams?
Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon