POLYCET (2022) - 9
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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A tangent to a circle intersects it in ___ points.
Sum of the central angles in a circle is __ degrees.
The length of the tangents from a point A to a circle of radius 3 cm is 4 cm, then the distance between A and the centre of the circle is __ cm.
A circle may have ____ parallel tangents atmost.
ABC is a right triangle right angled at B. A circle is inscribed in the triangle. If AB = 8 cm and BC = 6 cm, the radius of the circle is ___ cm.
The angle between a tangent to a circle and the radius drawn at the point of contact is ____ degrees
The diameter of a circular pond is 17.5 m. It is surmounted by a path of width 3.5m. Find the area of the path in m2.
The diameter of a circle is 10.2 cm then its radius is ___ cm.
How many tangent lines can be drawn to a circle from a point outside the circle?
A line which is perpendicular to the radius of the circle through the point of contact is called a ___
1 volt 1 coulomb =
a. 1 Watt
b. 1 Ampere
c. 1 Joule
d. 1 Ohm
The disaster caused due to an overload can be avoided by using a / an………..
The arrangement in an electrical circuit that prevents short circuit is
Voltmeter is connected
a. Parallel in the circuit
c. Used to attach and detach the circuit
d. Series in the circuit
Which one of the following is the correct procedure to measure potential difference ?
a. Connecting a voltmeter in series in the circuit
b. Connecting a voltmeter in parallel in the circuit
c. Connecting a ammeter in parallel in the circuit
d. Connecting a ammeter in series in the circuit
Fuse wire is an alloy of
a. Aluminium + copper + zinc
b. Copper + zinc
c. Tin + lead
d. Copper + tin
The positively charged ions in an electrolytic solution are called
Which of the following are non-ohmic material ?
The conduction of electric current from battery to bulb is possible with
a. Nylon wires, because nylon is a good conductor
b. Copper wires, because copper is a non conductor
c. Copper wires, because copper is a good conductor
d. Nylon wires, because nylon is a bad conductor
The instrument used to check the EMF of battery is ………..
b. Electric tester
Tongue is a taste receptor. Which nerve helps to identify the taste ?
a. 6th cranial nerve
b. 10 th cranial nerve
c. 5 th cranial nerve
d. Optic nerve
We can detect taste easily when tongue touches this part
c. Buccal cavity
Digestive juice secreted by the walls of stomach contains an acid called
a. Sulphuric acid
b. Amino acid
c. Nitric acid
d. Hydrochloric acid
Function of tongue is
a. Mixing of food with saliva
b. Spread out food evenly in mouth
c. Used to talk deliberately
d. All the above
During respiration the movement of diaphragm moves the rib cage inflating and deflating the
Pavlov conducts experiment on
a. Insight learning
c. Conditional reflex
d. Unconditional reflex
Protein digestion starts in
The number of salivary glands present in mouth
a. 2 pairs
b. 3 pairs
c. 5 pairs
d. 4 pairs
After chewing ,food forms into slurry mass called
Which of the following is not concerned with Ghrelin ?
a. This hormone secretes when the stomach is empty
b. Certain cells in the walls of stomach secretes Ghrelin
c. Due to the secretion of Ghrelin, hunger signals generates
d. Ghrelin suppresses the hunger