Uttarakhand Board Class 7 Question Paper 2022 Science

artts qIT 2022
DT-7 (lass-VII)

fy7-fasT (Science)
H4 2:30 ET yut-80
Note -

Attempt all questions

Q1 Match the items given in column 'A' with those in column
"B
1x5 5

Column A Column B°

(a) Nitrogen (1) Rhizobium

(b) Yeast (2) Transpiration
(c) Stomata 3) Starch

(d) Saliva 4) Indicator

(e) Phenolpthalein (5) Alcohol
.1

(1) RTSUitèza
(2) THu

(T)FHET () (3) I )
(4)
(5) e
0-2: Write 'T' if the statement is true and F it is false. 1x5 5

(1) Carbon dioxide is released in photosynthesis.

(2) The tongue helps in mixing food with saliva.

(3) Acids are sour in taste.

(4) During heavy exercise the breathing rate of person slows down.

(5) Water from rivers is the only source for irrigation in the field.

. 2

03 Choose ( ) the correct answer and write down in your answer sheet. 1x5 5
(a) The plant which traps and feeds on insect is

() Cuscuta (2) China Rose
(3) Pitcher plant (4) Rose
(b) Which of the following is not a forest product?
(1) Gum (2) Plywood
(3) Sealing wax (4) Kerosene
(c) Which one of the following is not
responsible for water shortage?
(1) Rapid growth of Industries (2)
Increasing population
(3) Heavy rainfall 4) Mismanagement of water resources
(d) Stainless steel pans are usually provided with
copper bottoms. The reason for this
could be that-

(1) copper bottom makes the pan more durable.
(2) Such pans appear colourful.

(3) copper is better conductor of heat than the stainless steel.
(4) copper is easier to clean than the stainless
steel
(e) The reproductive part of a
plant is the-
(i) Leaf (i) Stem
(ii) Root (iv) Flower
. 3

(1) 377Rd (2) TS6
(3) (fqar ureu) (4) THT

() (2)
(3) (4) t f

(1) stenfyaav ge
) 3Ff5 q

(2)

(4)

(1) 2)
(3) 4) y
Q.4- Fill in the
blanks 1x5-5
(a) Three forms of water are
and
(b) Green plants are called since they synthesis their own food.
(c) The largest gland in the hunman
body is
(d) Temperature is measured in degree
(e) Clothes of colours absorb more heat than clothes of light colours
. 4 RaT yfef aifor
(a)
(b)

(d) fri
(e)
Q5- How would you show that setting of curd is a chemical change? 3

. 5

Q6- How will you help your neighbours in case cyclone approaches your village/town? 4

?
07 (a) Sketch the reproductive parts ofa flower and label it. 4

(b) Explain the difflerence between self-pollination and cross pollination? 2

Q8- (a) State two differences between a convex and a concave lens. 2

(b) Explain how ground water is recharged? 3

(c) List five products we get from forest. 2

Q9 Classify the changes involved in the 1ollowing processes as physical or chemical changes.

2x5=10

(a) Photosynthesis (6) Burning of coal

(c) Melting of wax (d) dissolving sugar in water

(e) Digestion of food
.9

(a) TT HITYUT (b) d TAT
(c) fuaT (d)
(e) tuA
Q10 Sketch the cross section of soil and label the various
layers 4+4-8
. 10 aT 3 TE fa a_U ya fafha qvTÍ THifT ify
Q11- (a) A simple pendulum takes 32 sec to
complete 20 oscillations. What is the time period
of the pendulum? 4

(b) What is a virtual image? Give one situation where a virtual image is formed. 3

Q12 (a) Outline your role as an active citizen in relation to sanitation. 5

(a)
(b) Write down a short note on any one of the following. 5
(1) Fertilization (2) Budding
(3) Fragmentation

(a) 9qA (b)
c)
Q13- Name any two effects of electric current. 2

.13

Q14 Drawa diagram ofthe human excretory system and label the various parts 3
T.14