Atoms of an element differ from those of all other elements in
1 Atomic number and electronic configuration
2 Atomic number and number of valence electrons
3 Number of neutrons and electronic configuration
4 None of these
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In vulcanization, natural rubber is heated with 1 Carbon 2 Sulphur 3 Silicon 4 Phosphorus
meron po bang minerals ang astoroids po ba?
Amalgams are 1 Alloys which contain carbon 2 Alloys which have great resistance to abrasion 3 Alloys which contain mercury as one of the contents 4 None of these
What is light year?
Atom bomb is based on the principle of 1 Nuclear fusion 2 Nuclear fission 3 Both (a) & (b) 4 None of these
4 Answers ECAT, Group 4 iv, Qnet, UPSC,
What is the Genetics?
Which of the following is the best conductor of electricity? 1 Zinc 2 Copper 3 Gold 4 Silver
How many astronauts travelled in the challenger?
what is the force that helping the earth to revolve by its own.
Which synthetic fiber is known as artificial silk? 1 Cotton 2 Rayon 3 Terylene 4 Nylon
Catalytic properties of a substance may be best defined as a phenomenon of 1 Absorption 2 Chemisorption 3 Adsorption 4 None of these
Optic fibers are mainly used for which of the following? 1 Communication 2 Weaving 3 Musical instruments 4 Eye surgery