जिल्हा परिषद माध्यमिक विद्यालय, विडूळ ता . उमरखेड जि. यवतमाळ
Online Exam
Class - 10 th , Sub :- Science and Technology Part - II, Marks - 40, Time - 2 : 15 Hours
Date - 09 / 04 / 2021 , Timing - 12 : 00 to 2 : 15
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Q.1. (A) Choose the correct option: [5]
i. Liquor is produced from ______.
A. alcohol
B. glucose
C. acid
D. salt
ii. ________ organism is used as biofertilizers.
A. Thiobacillus
B. Nostoc
C. Saccharomyces
D. Ischeria
iii. Transgenic raw potatoes generate the immunity against _______ disease.
A. plague
B. cholera
C. leprosy
D. TB
iv. _________ acid is used in Production of vitamins .
A. Citric
B. Gluconic
C. Lactic
D. Itaconic
v. A silicon solar cell of dimension 1 sq.cm. generates current of about ______.
A. 50 mA
B. 30 mA
C. 50 A
D. 30 A
(B) Solve the following sub-questions: [5]
i. State true or false:
Electrical energy is generated .
ii. Write the correlated answer:
Accessory whorls : Calyx and corolla :: essential whorls: ...............
iii. Find odd man out:
Prostate glands, Bartholin glands, Cowper’s gland, Seminal vesicle
iv. Write the function of
Generator
v. Name the following ;
Modern technologies in reproduction.
Q.2. (A) Give scientific reasons (any two): [4]
i. Cell division is one of the very important properties of cells and living organisms.
ii. The various food chains in the ecosystem maintain the environmental balance.
iii. Though tortoise lives on land as well as in water, it cannot be included in class-
Amphibia.
(B) Answer the following questions (any three): [6]
i. What is inheritance of acquired characters?
ii. Complete the following chart.
iii. Observe the given pictures & answer the questions.
a) Identify the disasters shown in both pictures.
b) Write their effects.
c) Which primary precautions will you take in both situations?
iv. Write short note - Embryological evidences
v. Distiguish between , Binary fission & Multiple fission
Q. 3. Answer the following Questions .(any Five ) (15)
i. Which evidence of evolution is shown in the given picture? Explain the
importance of this evidence.
ii. Complete the following chart.
iii. Draw the flowcharts for the given power stations.
a)Thermal energy based electric power plant
b)Power generation plant on energy of natural gas
iv. Observe the given diagram and answer the questions given below
a) Explain the diagram.
b) Answer the questions with the help of diagram.
c) What is the name of machine given in the diagram
d) Write down the function of this machine in short.
e) How does it gets/forms the motion
v. Explain the classification of threatened species of animals with an example.
vi. Define vestigial organs. Write names of some vestigial organs in the human body
and write the names of those animals in whom the same organs are functioning.
vii. Explain in brief Darwin’s theory of natural selection.
viii. Identify the given figure and label it.
Q. 4. Answer the following . (any one) (05)
i. Explain any five types of evidence that support the theory of evolution.
ii. Write answers to the questions based on the paragraph.
Social health is the ability of a person to establish relationships with other
persons. Ability to change one’s own behaviour according to changing social conditions
is an important characteristic of social health. A socially healthy person can also cope
with a variety of social situations. Can behave appropriately and adaptable to changing
circumstances. Your spouse can match such people with your co-workers and form
good relationships. All of these relationships require good communication. It is
important to have empathy and a sense of responsibility for each other. On the other
hand, there are negative shades like jealousy, revenge, and loneliness. If there is tension
in the relationship, healthy relationships will not be formed. Stress management,
planning appropriate measures e.g. Regular exercise,deep breathing, and a positive
attitude can improve social health.
a) What is social health?
b) What qualities are needed to build good social relationships?
c) Which vices have negative consequences?
d) What measures would you take for stress management?
e) Give two examples of negative shades.
