The element required for solar energy conversion is
1 Beryllium
2 Silicon
3 Tantalum
4 Ultra pure carbon
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In a fast breeder reactor, U-238 gets converted to 1 U-235 2 U-237 3 Co-60 4 Plutonium-239
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
‘Saponification involves the hydrolysis of fats and oils by 1 Water 2 Washing soda 3 Stearic acid 4 Caustic soda
When a person sends a message to someone with the Internet, there are steps that happen to the recipient to receive the message. How does the recipient know that the message was not edited by someone else?
Caustic soda is 1 NaC1 2 Na2CO3 3 NaOH 4 NaHCO3
Write about recreational function of Science
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When was the indian made rocket “ rohini ” launched from thumba?
what is office automation?
‘No two electrons in an atom can have the same set of four quantum numbers’ is 1 Bohr’s law 2 Aufbau principle 3 Newton’s law 4 Pauli’s exclusion principle
Which of the following characteristics is not-shown by hydrogen? 1 It burns in air to form water 2 It supports combustion 3 It combines with almost all the metals forming hydrides 4 None of these
different types of satellite?
Potassium nitrate is used in 1 Salt 2 Glass 3 Fertilizer 4 Medicine