HALF YEARLY ASSESSMENT (2020-21)
GRADE – VII
SUBJECT- SCIENCE
Time allowed: 1 hr (C... (Class-7B)
General Instructions:
1) All questions are compulsory.
2) Question 1 to 50 carry 1 mark each.
3) It is mandatory to click on SUBMIT after completing the paper.
4) Confirm to the invigilator once the paper is submitted.
5) No extra time would be provided as the paper would lapse automatically after the stipulated time.
Hi Krrish, when you submit this form, the owner will be able to see your name and email address.
Required
1Enrichment of soil with nutrients is done by adding ________________.
(1 Point)
oxygen
nitrogen
salt
water
2Identify the correct definition of saprotrophic plants.
(1 Point)
Plants which are unable to produce a particular organic compound.
Plants which feed upon other living plants.
Plants which feed on insects to obtain nutrients.
Plants which feed on dead and decaying matter.
3Penny bought beautiful shoes for her. But, in the rainy season, her shoes were spoiled because of _________________.
(1 Point)
bacteria
algae
fungi
parasite
4Bile is stored in a sac like structure called_______________.
(1 Point)
kidney
thymus
gall bladder
rectum
5The walls of the large intestine absorb ___________________.
(1 Point)
digested food
undigested food
salt and water
cellulose
6Alpaca is ______________________.
(1 Point)
a kind of leaf on which the silk moth feeds
a stage in the life cycle of a frog
an animal from which wool is obtained
a country which leads in wool production
7Sorting of the wool is associated with ____________________.
(1 Point)
steaming the wool
separating the wool of different textures
colouring the wool
cleaning the wool
8Sorter’s disease is caused by __________________.
(1 Point)
silkworm
pupa
anthrax
rhizobium
9The complete digestion of food takes place in _____________________.
(1 Point)
small intestine
stomach
rectum
anus
10In rumen, the food is partly digested and is called ________________.
(1 Point)
cod
cud
cord
dung
11The acid-base indicator extracted from lichen is ______________.
(1 Point)
turmeric
china rose
litmus
vanilla extract
12The substance that does not contain an acid is _____________________.
(1 Point)
soap
lemon juice
curd
tomato
13Blue litmus paper is dipped in a solution. It remains blue. The nature of solution is ________________.
(1 Point)
acidic
acidic or basic
basic or neutral
neither acidic nor basic
14Bitter taste is one of the characteristics of ________________.
(1 Point)
salt
acid
base
indicator
15Identify the liquid which will change its colour on adding turmeric indicator:
(1 Point)
hydrochloric acid
nitric acid
sulphuric acid
sodium hydroxide
16Secretion of large amount of acid in the stomach causes indigestion. It can be relieved by taking ______________.
(1 Point)
milk of magnesia
calamine solution
hydrochloric acid
common salt
17In acidic solution China rose indicator turns _______________.
(1 Point)
green
black
magenta
blue
18Statement 1- Heat is always produced in neutralisation reaction.
Statement 2- Factory wastes are neutralised before disposing it into the water bodies.
(1 Point)
both statement 1 and statement 2 are correct
both statement 1 and statement 2 are incorrect
statement 1 is correct but statement 2 is incorrect
statement 1 is incorrect but statement 2 is correct
19Ascorbic acid is commonly known as _________________.
(1 Point)
Vitamin A
Vitamin B
Vitamin C
Vitamin D
20The mode of heat transfer that takes place in liquids and gases but not in solids is ______________________________.
(1 Point)
conduction
radiation
convection
insulation
Answers
what is this mate??????
Answers are given as follows
1Enrichment of soil with nutrients is done by adding
nitrogen
2Identify the correct definition of saprotrophic plants.
Plants which feed on dead and decaying matter.
3Penny bought beautiful shoes for her. But, in the rainy season, her shoes were spoiled because of
fungi
4Bile is stored in a sac like structure called_
gall bladder
5The walls of the large intestine absorb
undigested food
6Alpaca is
an animal from which wool is obtained
7Sorting of the wool is associated with
separating the wool of different textures
8Sorter’s disease is caused by
anthrax
9The complete digestion of food takes place in
small intestine
10In rumen, the food is partly digested and is called
cud
11The acid-base indicator extracted from lichen is
litmus
12The substance that does not contain an acid is
soap
13Blue litmus paper is dipped in a solution. It remains blue. The nature of solution is
basic or neutral
14Bitter taste is one of the characteristics of
base
15Identify the liquid which will change its colour on adding turmeric indicator:
sodium hydroxide
16 Secretion of large amount of acid in the stomach causes indigestion. It can be relieved by taking
milk of magnesia
17 In acidic solution China rose indicator turns
magenta
18 Statement 1- Heat is always produced in neutralisation reaction.
Statement 2- Factory wastes are neutralised before disposing it into the water bodies.
both statement 1 and statement 2 are correct
19 Ascorbic acid is commonly known as
Vitamin C
20 The mode of heat transfer that takes place in liquids and gases but not in solids is
convection