MKCL Maharashtra Olympiad Movement Question Paper STD X 2015

Name of the Organisation : Maharashtra Knowledge Corporation Limited
Name of the Post : Maharashtra Olympiad Movement Question Paper STD X 2015
Year : 2014- 2015
Class : Standard X
Subject : Science, Mathematics,Mental Ability

Website : https://www.mkcl.org/
Download Sample Question Paper : https://www.pdfquestion.in/uploads/8372MOMStd10.pdf

Maharashtra Olympiad Movement Question Paper STD X :

Science :
1) Fuse boxes are made up of china clay as it is………….
a) Good conductor of heat

Related : MKCL Maharashtra Olympiad Movement Question Paper STD IX 2015 : www.pdfquestion.in/8370.html

b) Good conductor of electricity
c) Semiconductor
d) Bad conductor of heat and electricity

2) Which of the following devices produces electricity…………?
a) Generator
b) Ammeter
c) Galvanometer
d) Electric motor

3) ………… flows in only one direction through a wire.
a) Alternating current
b) Direct current
c) A.C. Voltage
d) D.C. Voltage

4) Why do power plants commonly produce alternating current?
a) It is economic and voltage can be changed as per requirement.
b) Less resistance is created.
c) No loss of energy in production.
d) No loss of energy in transmission.

5) In case of simple cell, the electric current is due to ……………..
a) Motion of electrons.
b) Motion of ions
c) Motion of electrons in wire and ions in electrolyte
d) Motion of electrons in wires as well as in electrolyte

6) In simple circuit, a cell is connected to a bulb and the bulb glows. We receive light because ………..
a) The filament becomes hot
b) Electric energy is converted into light energy
c) Currents remain approximately constant in the circuit
d) All above are true

7) When two lamps rated 220V, 50W and the other rated 220V, 100W are connected in
(i) series and
(ii) parallel. In both the cases which lamp glows brighter?
a) 220v, 50W bulb will glow brighter in series combination and 220V, 100W bulb will glow brighter in parallel combination
b) 220V, 100W bulb will glow brighter in series combination and 220V, 50W bulb will glow brighter in parallel combination
c) 220V, 100W bulb will glow brighter in series and parallel combination
d) 220V, 50W bulb will glow brighter in series and parallel combination

8) A ring magnet is put in a vertical stand with N pole up. Another identical ring mag net is slid down the stand with S pole up then, magnet levitates because______
a) It becomes light.
b) Of repulsion.
c) Of magnetic induction.
d) Of gravitational and repulsive forces balance each other.

9) Which of the following substances are weakly repelled by magnetic field?
a) Paramagnetic
b) Ferromagnetic
c) Diamagnetic
d) Paramagnetic and Diamagnetic

11) The force between two unlike magnetic poles______
a) Increases linearly with increase in the distance between them
b) Increases as the square of the increasing distance
c) Decreases linearly with decrease in the distance between them.
d) Decreases with inverse square of increasing distance

12) Magnetic lines of force are continuous &__________ paths in the magnetic field.
a) Open
b) Sometimes closed sometimes open
c) Closed
d) Open at poles & close at center

13) Which of the following is true about the Earth’s magnetic field?
a) It is active only at the center of the earth.
b) There is no magnetic field.
c) It stretches out into space.
d) It keeps the moon in orbit.

14) The total resistance between the end points in the following diagram is ….
a) (5/7) R
b) (71/ 105) R
c) (21/35) R
d) (5/21) R

15) Two electric bulbs have resistances in the ratio 1: 2. If they are joined in series, the energy consumed in them is in the ratio …..
a) 1:2
b) 4:1
c) 2:1
d) 1:1

16) When a wire of uniform cross-section ‘a’, length ‘l’ & resistance ‘R’ is bent into a complete circle. The resistance between any two of diametrically opposite points will be………………
a) 4R
b) R/4
c) R/8
d) R/2

Mathematics :
1) An electric pump can fill a tank in 3 hours. Because of the leak in the tank it was taking 3 ½ hrs.to fill the tank. Then the leak can drain all the water of the tank in …………
a) 12 hours
b) 10 1/ 2 hours
c) 6 1 /2 hours
d) 21 hours

2) The circumference of the front wheels of a locomotive is 3.5 meters and that of the back wheel is 3.0 meters. If the locomotive is moving at a speed of 15 m/sec, the shortest time in which both wheels will make whole number of turns is, in sec ……..
a) 1.4 b) 2.1 c) 4.0 d) 6.4

3. Two triangles are similar if ……………..
a) Two sides are proportional
b) Two sides are congruent
c) Two pairs of angle are congruent
d) Two pairs of angle are proportional

4. A student divided a number by two when he was required to multiply it by 2.The answer he got was 2, then correct answer should have been………
a) 12 b) 8 c) 6 d) 4
5. The whole surface of a cube is 216 cm2. The volumes of this will be_______.
a) 108 cm3 b) 54 cm3 c) 432 cm3 d) 216 cm3

Mental Ability :
Find the term from alternatives at question mark ‘?’:
1. 15 – 2 = 229; 18 – 5 = 349; 12 – 3 = ?
(a) 153
(b) 200
(c) 100
(d) 160

2. 318 ×223 = 636; 15 × 234 = 30; 7 ×245 =?
(a) 13
(b) 14
(c) 10
(d) 11

3. 23 – 18 = 410; 17 – 18 = 89 ; 69 – 82 = ?
(a) 90
(b) 84
(c) 178
(d) 75

4. 878 – 857 = 12; 1798 – 1497 = 13; 1612 – 1503 =?
(a) 91
(b) 19
(c) 33
(d) 133

5. 5 + 1 = 124; 6 + 2 = 212; 7 + 3 =?
(a) 334
(b) 360
(c) 250
(d) 320