The study of the weather is called____________?
A. Meteorology
B. Weatherology
C. Ecology
D. Geology
A. Meteorology
B. Weatherology
C. Ecology
D. Geology
A. Ammonia
B. Hydrogen
C. Nitrogen
D. Carbon Dioxide
In winter an iron pipe feel colder than a wooden window . This is because wood is_______?
A. Conductor
B. Non-Conductor
C. Semi- Conductor
D. Not a solid while iron is a solid
E. None of these
A. saponification
B. hydrolysis
C. condensation
D. polymerisation
A. 632
B. 639
C. 642
D. None of these
A. Sound wave
B. ‘X’-ray
C. Ultra-sound wave
D. Magnetic wave
Humans usually have 20 primary (deciduous, “baby” or “milk”) teeth and 32 permanent (adult) teeth. Most people know these teeth as baby teeth, though they are also sometimes called milk teeth or primary teeth. In all, children have 20 baby teeth – 10 on the top and 10 on the bottom. These teeth act as placeholders for the adult teeth that grow in after the baby teeth fall out.