Worksheetschemistry
Total questions: 20
Worksheet time: 10mins
In which of the following process bacteria is not used?
formation of curd
baking of bread
fermentation of sugarcane juice
nitrogen fixation
which statement id NOT correct?
digestion is chemical change
photosynthesis is chemical change
respiration is chemical change
crustallisation is chemical change
the function of gills in a fish is to?
take in oxygen from air
absorb nutrients present in water
absorb dissolved oxygen from water
excrete waste in water
mode of reproduction of potato is?
spore formation
budding
fragmentation
vegetative propogation
mitochondria: ATP, ribososme: ?
carbohydrate
fat
protein
vitamin
which of the following metals should be stored in kerosene oil?
tin and lead
sodium and potassium
boron and carbon
sodium and phosphorous
choose the odd one out
gamete
embryo
egg
ovum
which of the following is the reproductive part of ginger?
seed
leaf
root
stem
paramecium is?
algae
bacteria
fungi
protozoa
which of the following is single celled , except?
embryo
paramecium
hen's egg
zygote
action caused by virus is?
nitrogen fixation
AIDS
malaria
curd formation
the major excretory product in human being is?
ammonia
uric acid
urea
ammonium chloride
when the soil is too acidic , it is treated with?
acid
salt
base
water
quick lime is used in the soil, when the soil is?
salty
basic
acidic
neutral
tartaric acid is found in?
1. lemons , 2. amla , 3.unripe mangoes, 4.grapes?
1 and 2
2 and 3
3 and 4
1 and 3
silk industry began in?
china
india
japan
korea
silk worms are made of?
protein
vitamin
minerals
all of the above
wool and silk fibres are obtained from?
plant
animal
plants and animal
all of the above
which part of the black sheep has wool?
legs
face
abdomen and back
all of the above
the process of depositing of layer of zinc on iron is called?
galvanisation
neutralisation
crystallisation
all of the above
