The variety of coal in which the deposit contains
recognizable traces of the orginal plant material is
1 Anthracite
2 Lignite
3 Peat
4 Bitumen
Rayon is chemically 1 Glucose 2 Amylase 3 Cellulose 4 Pectin
Which variety of glass is heat resistant? 1 Hard glass 2 Flint glass 3 Pyrex glass 4 Bottle glass
How many astronauts travelled in the challenger?
what is the food constitution of ragi and rice
In which of the following processes light energy is converted into chemical energy? 1 Respiration 2 Fermentation 3 Photosynthesis 4 Photoresiration
Why is it necessary to cook food ?
meron po bang minerals ang astoroids po ba?
Why is food necessary for human body ?
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon
Which is the regulatory authority of atomic energy in india?
what are advantages & disadvantages of science?
In an atomic nucleus, neutrons and protons are held together by 1 Gravitational forces 2 Magnetic forces 3 Exchange force 4 Coulombic forces