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POLYCET (2022) - 10
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 30
1. Question
Radius of a cylinder is doubled keeping its lateral surface areas the same . then the height is……
a. Tripled
b. One third
c. Halved
d. Doubled -
Question 2 of 30
2. Question
Each dimension of a cube is doubled . Ratio of the total surface areas of new and original cuboid is..
a. 4 : 3
b. 8 : 3
c. 2 : 1
d. 4 : 1 -
Question 3 of 30
3. Question
A cone, hemisphere and cylinder stand on equal bases and have the same height hen the ratio of their volumes ..
a. 1 : 2 : 3
b. 1 : 3 : 2
c. 3 : 2 : 1
d. 2 : 1 : 3 -
Question 4 of 30
4. Question
If the diameter of sphere is 10 then radius of the sphere is
a. 6
b. 7
c. 5
d. 3 -
Question 5 of 30
5. Question
To calculate the quantity of water inside a bottle , we need to find out the
a. Total surface area
b. Density
c. Area
d. Volume -
Question 6 of 30
6. Question
A rectangular parallelopiped is also known as.
a. Cube
b. Cuboid
c. Cylinder
d. Cone -
Question 7 of 30
7. Question
Total surface area of a cuboid =
a. 2h ( l + b )
b. 2 ( lh + bh )
c. 2 ( lh + hb + lb )
d. lbh -
Question 8 of 30
8. Question
A 20 m deep well with diameter 7 m is dugand the earth from digging is evenly spread out to form a platform 22 m by 14 m .then the height of the platform is …
a. 2.25 m
b. 2 m
c. 2.5 m
d. 3 m -
Question 9 of 30
9. Question
If the curved surface area of cone is 4070 cm2 and its diameter is 70 cm then its slant height is…
a. 37 cm
b. 27 cm
c. 34 cm
d. 30 cm -
Question 10 of 30
10. Question
In which situation, we need to find out the total surface area
a. Gift paper to cover a gift
b. Ghee in a can
c. Colouring a room
d. Sugar in the tin -
Question 11 of 30
11. Question
Specific gravity of slag is always
a. Less than the molten metal
b. More than the molten metal
c. Same as molten metal
d. More or less the metal depending on the metal -
Question 12 of 30
12. Question
Low boiling metals like mercury and zinc are refined by
a. Distillation
b. Poling
c. Liquation
d. Electrolytic reduction -
Question 13 of 30
13. Question
Extract Na from NaCl , we obtain Na at
a. Both
b. Cathode
c. Anode
d. None -
Question 14 of 30
14. Question
Arrange the following metals in the order of their decreasing reactivity ; Fe, Cu, Mg, Ca, Zn, Ag
a. Ca > Mg > Zn > Fe > Cu > Ag
b. Zn > Fe > Cu > Ag > Ca > Mg
c. Fe > Cu > Ag > Ca > Mg > Zn
d. Mg > Zn > Fe > Cu > Ag > Ca -
Question 15 of 30
15. Question
Aluminium is used for making cooking utensils.which of the following properties of aluminium are resposible for utilizing it ?
a) Good thermal conductivity
b) God electrical conductivity
c) Ductility
d) High melting point
a. a , d
b. a , c
c. b , c
d. a , b -
Question 16 of 30
16. Question
Which of the following reagent is used in the extraction of Aluminium from bauxite ?
a. Sodium carbonate
b. Sodium chloride
c. Sodium hydrogen carbonate
d. Sodium hydroxide -
Question 17 of 30
17. Question
Chemically rust is a
a. Hydrated ferric chloride
b. Unhydrated ferric chloride
c. Unhydrated ferric oxide
d. Hydrated ferric oxide -
Question 18 of 30
18. Question
Which method is most suitable to enrich the sulphide ores ?
a. Hand picking
b. Washing
c. Froth floatation
d. Magnetic separation -
Question 19 of 30
19. Question
The displacement reaction involving high reactive metals are highly—
a. Oxidative
b. Endothermic
c. Reductive
d. Exothermic -
Question 20 of 30
20. Question
Which of the following is least abundant metal in Earth’s crust ?
a. Ca
b. Al
c. K
d. Fe -
Question 21 of 30
21. Question
Organs which are not useful in an animal are called
a. Digestive organs
b. Vestigial organs
c. Analogous organs
d. Homologous organs -
Question 22 of 30
22. Question
The study of fossils called
a. Ecology
b. Anatomy
c. Paleontology
d. Embryology -
Question 23 of 30
23. Question
August Weismann proved that bodily changes
a. Passed to its offsprings
b. Won’t be passed to its offsprings
c. Passed to its F2 generation offsprings
d. None of the above -
Question 24 of 30
24. Question
Name the scientist who disproved the theory of inheritance of acquired characters
a. Mendal
b. Darwin
c. Weismann
d. Lamarck -
Question 25 of 30
25. Question
Identify true statement
a. All the family members are identical characters
b. Differences in character within very closely related groups of organisms are referred to as variation
a. a,b are true
b. a,b are false
c. a is true,b is false
d. b is true,a is false -
Question 26 of 30
26. Question
Chromosomes whose number and morphology do not differ between males and females of a species are called
a. Allosomes
b. Homosomes
c. Heterosomes
d. Autosomes -
Question 27 of 30
27. Question
The gender of human being who has XX pair of allosomes
a. Female
b. Male
c. Both Female and male
d. None -
Question 28 of 30
28. Question
The “Theory of Natural selection” is proposed by
a. Lamarck
b. Weismann
c. Darwin
d. Mendel -
Question 29 of 30
29. Question
The process by which traits are passed from one generation to another generation is called
a. Variations
b. Inheritance
c. Genetic drift
d. None -
Question 30 of 30
30. Question
Paleontologist deals with
a. Embryological evidences
b. Fossil evidences
c. Vestigious organ evidences
d. All