Which of the following roofs provide better protection
against heat?
1 Cement slab
2 Asbestos sheets
3 Reinforced concrete
4 None of these
Old-written material, which cannot be read easily, can be read by 1 Cosmic rays 2 Ultraviolet rays 3 Infra red rays 4 None of these
What are the divisions of food according to the functions it performs ? Describe them
The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
Which of the following metals is a better conductor of electricity? A. Silver B. Copper
What is the Respiration ?
I am a student of class 12. PCMB group. I am not getting admission in any of the medical colleges. And I am not good at math. So what are the options available for me????
Permanent hardness of water may be removed by the addition of 1 Alum 2 Sodium carbonate 3 Lime 4 Potassium permanganate
What is the Biology ?
Atoms are composed of 1 Electrons only 2 Protons only 3 Electrons and protons 4 Electrons and nuclei
Who is the chairman od atomic energy commission of india?
When was the atomic energy regulatory board ( aerb ) constituted?
A mixture of salt and sand can be separated by 1 Sublimation 2 Dissolving in water 3 Gravity separation 4 Dry distillation