OSSSC TGT Science PCM Mock Test - 3 - OTET MCQ

Linguistic Intelligence is associated with the ability of students to use words in a proper way. These students like reading, writing poetry, playing word games, etc. 

Playing games along with studies in school is very important for the physical growth and balance of the children. It also develops in them qualities like cooperation and spirit of teamwork to work with each other.

The sounds th, ph, ch are phonemes. The phoneme is the unit of sound.  A phoneme combines with other phonemes to give rise to meaningful words. Phonemes distinguish one word from another. These are established by the use of minimal pairs, such as pat vs bat or tap vs tab.
Hence, the correct answer is, 'Phonemes.'

In order to avoid gender stereotyping in class, a teacher should try to put both boys and girls on non-traditional roles. A teacher should take care of each child irrespective of their gender. He/she should ensure the students' maximum potential. Everyone has the right to education. A teacher should ensure that his/her students derive maximum benefit from education.
Hence, the correct answer is, 'Try to put both boys and girls in non-traditional roles.'

Teachers must be aware of the fact that every child is different from each other. The differences occur from physical characteristics to learning style and ability. The objective of education is to provide the fullest possible development of learners. So, to address the individual differences in students a school should follow a child-centered curriculum and provide multiple learning opportunities to students. The teachers should find out the different strengths and weaknesses of students before adopting an appropriate curriculum.
Hence, the correct answer is, 'Follow a child-centered curriculum and provide multiple learning opportunities to students.'

When the light is incident at Brewster’s angle, the angle between the reflected ray and refracted ray is 90o, irrespective of the value of the refractive index.

Properties:
• Electromagnetic waves are propagated by oscillating electric and magnetic fields oscillating at right angles to each other. Hence (a) is incorrect.
• Electromagnetic waves travel with a constant velocity of  3 x 108 ms^-1 in vacuum. Hence (c) is incorrect.
• Electromagnetic waves need no medium of propagation. The energy from the sun is received by the earth through electromagnetic waves. Hence, correct answer is (b).

From the Question,

• Emf (E) = 2 V

• Internal Resistance (r) = 0.2 Ω

• Resistance (R) = 7.4 Ω

Three cells of 2V and 0.2 each are connected in series.

Consider two cells connected to each other.

The total potential difference would be :

Total Potential Difference in a cell is given as :

V=E-IR

Thus,

⇒E-Ir=E1-Ir₁+E₂+Ir₂

⇒E_eq=E₁+E₂ and r_eq=r₁+r₂

Therefore,

For three cells each of emf 2V,

E=2+2+2=6V

For three cells with internal resistance 0.2 Ω,

R=.02+.02+.02=0.6 Ω

We know that,

I=E/r+R

Implies,

 I=6/0.6+7.4

I=6/8

 I=0.75A

Magnifying power of a telescope is f₀/f_e​ ​​, so as  1/​​f_e increases, magnifying power increases.
Hence the correct answer is option D.

For sustainable interference wavelengths have to be the same. So frequency has to be the same too. Contact phase relation is also necessary to sustain the interference pattern else the pattern will keep changing so rapidly that we will not see any pattern.
Equal intensity is not a requirement to keep pattern sustained.

Moseley's work on X-ray spectra proved the significance of the atomic number.

The general formula of monohydric alcohols is C_nH2_n+1OH where n = 1, 2, 3… etc.. or R-OH where R is any alkyl group.
Alcohols are formed by replacement of 1 hydrogen atom from hydrocarbons.

Particles of solids have a very high force of attraction, particles of liquid have less force of attraction than solids and particles of gases have very less force of attraction. So the correct order of increasing attraction between particles is Oxygen, water and sugar.

Carnallite is an evaporite mineral a hydrated potassium magnesium chloride. It is variably colored yellow to white, reddish or blue. It occurs with a sequence of potassium and magnesium evaporite.

Fluorine is a halogen, which is group 17 on the periodic table, and the halogen are the most reactive.

A physical change can affect the size, shape or color of a substance but does not affect its composition or mass. The substances may be changed to another phase (i.e. gas, liquid, solid) or separated or combined.

Examples:

when ice melts
when sulfur is mixed with iron filings. 
breaking a glass 
dissolving sugar in water

These are the only 6 possible outcomes:1,2,3,4,5,6.

The area of an equilateral triangle

Hence, Option C is correct.

 I = ∫cos2x/(sinx+cosx)²dx
⇒I = ∫cos²x−sin²x(sinx+cosx)²dx
⇒I = ∫[(cosx+sinx)(cosx−sinx)]/(sinx+cosx)²dx
⇒I = ∫(cosx−sinx)/(sinx+cosx)dx
Let sinx+cosx = t 
(cosx−sinx)dx = dt
Then, I = ∫dt/t
I = log|t|+c
I = log|sinx + cosx| + c

 lim (x²-9)/x³+9x-6x²
Lim x=0
lim[(0)² - 9]/ (0)³ + 9(0) - 6(0)²
-9/0 (which is not defined)

The diagonal elements of a skew-symmetric is zero.

Let P(α, β) be any point on the curve

Now, the equation of the tangent at P is



Hence, the point of contacts are
(2, 2 + 2√3) and (2, 2 – 2√3)
Slope of the tangents are 2√3 , –2√3
Hence, the equations of tangents are
y – (2 + 2√3) = 2√3 (x – 2)
and
y –(2 – 2√3) = – 2√3 (x – 2)

A = {(2),(3)}      B = {-1,2,-2}
AB = {(-2,4,-4) (-3,6,-6)}

Set of rational numbers { x: x=p/q where p and q are integers and q≠0}.
Set of real numbers is not a subset of X. Set of natural numbers, whole numbers, integers are subset of X.