SHORT QUESTIONS Flashcards
What happens when mercuric oxide is heated?
2Hgo—-2Hg+O2
What happens when cuprous oxide and cuprous sulphide is heated
Cu2O+Cu2S—–Cu+SO2
Ionic compunds are solid. Give reasons.
Oppositely charge ions attract each other strongly which results in the formation of a regular crystal structure
WALKING IN A STRAIGHT LINE AND RIDING BICYCLE IS FACILATED BY WHICH PART OF BRAIN?
Hind Brain –Cerebellum
Function of Trypsin and Bile Juice
Digesting protein and Bile helps with digestion. It breaks down fats into fatty acids,
Which of the following oxides of iron would be obtained on the prolonged reaction of iron with steam?
Fe3O4
The metals that float when treated with water are:
Magnesium and calcium
Metal + Water
Metal Hydroxide+Hydrogen
Why metals react with nitric acid but dont evolve hydrogen gas?
It oxidises hydrogen into water
WHY DIAMOND AND GRAPHITE HAVE CONTRADICTORY HARDNESS EVEN THOUGH THEY ARE MADE OF SAME ELEMENT?
In Diamond one carbon atom is connected to another 4 carbon atom but in Graphite one carbon atom is connected to another 3 carbon atom.
What are reproductive and non reproductive part of Rhizopus
Sporangium and Hyphae
What is reproductive and non reproductive part of Hydra?
Buds and Tenatcles
