POLYCET (2022) - 10
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Radius of a cylinder is doubled keeping its lateral surface areas the same . then the height is……
b. One third
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
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
If the diameter of sphere is 10 then radius of the sphere is
To calculate the quantity of water inside a bottle , we need to find out the
a. Total surface area
A rectangular parallelopiped is also known as.
Total surface area of a cuboid =
a. 2h ( l + b )
b. 2 ( lh + bh )
c. 2 ( lh + hb + lb )
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
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
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
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
Low boiling metals like mercury and zinc are refined by
d. Electrolytic reduction
Extract Na from NaCl , we obtain Na at
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
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
d) High melting point
a. a , d
b. a , c
c. b , c
d. a , b
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
Chemically rust is a
a. Hydrated ferric chloride
b. Unhydrated ferric chloride
c. Unhydrated ferric oxide
d. Hydrated ferric oxide
Which method is most suitable to enrich the sulphide ores ?
a. Hand picking
c. Froth floatation
d. Magnetic separation
The displacement reaction involving high reactive metals are highly—
Which of the following is least abundant metal in Earth’s crust ?
Organs which are not useful in an animal are called
a. Digestive organs
b. Vestigial organs
c. Analogous organs
d. Homologous organs
The study of fossils called
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
Name the scientist who disproved the theory of inheritance of acquired characters
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
Chromosomes whose number and morphology do not differ between males and females of a species are called
The gender of human being who has XX pair of allosomes
c. Both Female and male
The “Theory of Natural selection” is proposed by
The process by which traits are passed from one generation to another generation is called
c. Genetic drift
Paleontologist deals with
a. Embryological evidences
b. Fossil evidences
c. Vestigious organ evidences