OSSAC TGT Science PCM Mock Test - 10 - OTET MCQ

Curriculum is prepared by the school for planning the sequence and the content that is taught in a school for a required period of time.

In a continuous and comprehensive evaluation system, the percentage of each summative assessment is 30% that all together forms 60%, and that of formative assessment is 40%.

Alfred Binet who was a French Psychologist invented the first practical IQ test that came to be known as the Binet-Simon test. the idea behind developing this is so that to find out the students who did not learn effectively from regular classroom instruction so extra efforts can be done to give them remedial work.
Hence, the correct answer is, 'Alfred Binet.'

The nature-nurture phrase was given by English Victorian Polymath Galton in a discussion of the influence of hereditary and environment in social advancement. The nature-nurture debate involves whether a person's behavior is a product of the environment, or it is inherited. Some say that the person's behavior is a product of his surroundings while others argue that the person's behavior is a product of genetics.
Hence, the correct answer is, 'Genetics and Environment.'

Phonological awareness is recognized as a skill that includes identifying and manipulating units of oral language parts like onsets, words, syllables. It is the ability to reflect and manipulate the sound structure. It focuses on manipulating individual sounds (phonemes) in spoken words. For eg- a teacher asks the child to break the word MAT into individual sounds M-A-T.
Hence, the correct answer is, 'Reflect and manipulate the sound structure.'

Active agencies of Socialization are the family, the schools, the community, the religion, the state, social clubs, etc. These are the agencies where socialization takes place actively. Passive agencies are Cinema, T.V, Radio, Newspapers, Public Library, magazines, marketplace, etc. In public libraries, people learn about manners, rules, etc but actual interaction does not take place.
Hence, the correct answer is, 'Public Library.'

Power P= V²/R​
If length is reduced by 10% then, new resistance of filament will be R′.
R′ = R−10% of R
R′ = 0.9R
Now new power of heater is P_2​
P_2​ = V²​​/R′ = V²/0.9R ​ ​= 1.1 P
% increase powe r = 11%

I₁=3A
I₂=8A
l=5m
r=0.1m
F=?
Force per unit length on the small conductor is given by:
f= μ_o2I₁I₂/4πr
Total force on the length of small conductor is
F=fl
F= μ_o2I₁I₂ l/4πr
F=4πx10^-7x2x3x8x5/4π x 0.1
F=2.4x10^-4N

Here, I = 12.5 A, R = 3 cm = 3 x 10^-2 m 
x = 4 cm = 4 x 10^-2 m
∴ 

The image of the object can be located on the screen for two positions of convex lens such that u and v are exchanged.
The separation between two positions of the lens is d = 20cm

 

From the figure.
u₁ + v₁ = 90 cm
v₁ − u₁ = 20 cm
Solving
v₁ = 55cm, u₁ = 35cm
From lens formula,

Light refracts as it passes through a material. It's direction changes, but it still passes through. Light travels at a maximum speed -- the speed of light in a vacuum, but when traveling in anything else it slows down. Different materials slow the speed of passing light at different rates. This property of matter is called the refractive index. When refracting, light doesn't change it's frequency, but since it changes it's speed, it must also change it's wavelength (it gets squished or elongated). Frequency, wavelength, and speed are all related, so if one property changes, another must as well.

In calcite crystal there is a phenomenon of double refraction. So, we see one dot as a stationary object whereas the other being refracted at a little displaced position seems to be rotating about the first dot.

Carboxylic acid is a weak acid as it undergoes partial or incomplete dissociation in water.

The process of changing liquid into gases from its upper surface at all temperature is called evaporation. Rate of evaporation increase with increase in temperature, surface area and wind speed.

Tyndall effect is shown by colloidal solution. Here milk and starch solution are colloids therefore milk and starch solution will show Tyndall effect.

It is the only metal that is liquid at room temperature. It has the lowest melting point and boiling point of any other metal. It has low thermal conductivity, and a quite low electrical conductivity. It is the only metal that doesn’t form diatomic molecules in the gaseous phase.

The homogeneous mixture is obtained because the particles of sugar are so small that it can be diffused to the intermolecular space. The composition remains is the same throughout.

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Required distance 

No. of elements in P(S) = 2³ = 8

∴ No. of elements in P(P(S)) = 2⁸ = 256

y + sin y = 5x
dy/dx + cos ydy/dx = 5
dy/dx = 5/(1+cos y)

Since g(x) and h(x) are integrals of the same function , therefore ; g(x) – h(x) is constant.

∵ AOB is a right triangle.
∴ Mid-point of AB is equidistant from A, O and B. 

cos 4x = cos 2x

Radius of the wheel = 1.26/2 = 0.63 m
Distance travelled in one revolution

∴ Distance travelled in 500 revolutions
= 500 x 3.96 = 1980 m

w’(z) = [(2-z)dy/dz(3z+9)- (3z+9)dy/dz(2-x)]/(2-z)²
[(2-z)(3) - (3z+9)(-1)]/(2-z)²
(6-3z+3z+9)/(2-z)²
= 15/(2-z)²

In a single toss, P(success) = 2/6 = 1/3 and P(non-success) = (1 − 1/3) = 2/3.
P(X=0) = P(non-success in the 1st draw and non-success in the second)
(2/3 × 2/3) = 4/9.
P(X=1) = P(success in the 1st toss and non-success in the 2nd) or (non-success in the 1st toss and success in the 2nd)]
(1/3 x 2/3) + (2/3 × 1/3) = 4/9.

Arrange data in ascending order,
3,4,6,7,8,8,9,10,12,13
No. of observations = 10
Median = n/2  => 10/2 = 5h observation.
5th observation is 8
Now we calculate mean deviation about median, i.e;
=> ∑∣xi−M∣/10
= {|3-8| +|4-8| +|6-8| +|7-8| +|8-8| +|8-8| +|9-8| +|10-8| +|12-8| +|13-8| }/10
= { 5 + 4 + 2 + 1 + 0 + 0 + 1 + 2 + 4 + 5}/10
= 24/10  => 2.4

For a non trivial solution : 

⇒ bc + ab - 2ac = 0 ⇒  ∴ there, a , b ,c, are in H.P