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Which of the following roofs provide better protection
against heat?
1 Cement slab
2 Asbestos sheets
3 Reinforced concrete
4 None of these
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Which of the following has the lease penetrating power? 1 Alpha particles 2 Beta particles 3 Gamma rays 4 All have the same penetrating power
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
iS ELEMENT IRON RADIOACTIVE AND WHY?
The neutral atom’s two isotopes differ in the number of 1 Electron shells 2 Protons 3 Valence electrons 4 Neutrons
Which of the following substances exhibit the property of sublimation? 1 Ice 2 Wax 3 Camphor 4 Ethyl alcohol
The purest form of iron is 1 Steel 2 Cast iron 3 Pig iron 4 Wrought iron
21 Answers CIPET, FCI, HCL, JIPMER, NTSE, PSI Data Systems, RRB, SSC,
What is one light hour?
The human skull rests on which bone? a)Manubrium b)Atlas c)Mandible d)Sternum
Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon
name all the density all cloth,metals,materials?
Which of the following is not an isotope of hydrogen? 1 Protium 2 Yitrium 3 Deuterium 4 Tritium
Biological Sciences 
