OSSSC TGT Science PCM Mock Test - 6 - OTET MCQ

Learning is a process that is influenced by various factors; physical factors such as health, nutrition, defects, etc; mental factors such as emotions, behavior, etc; and desire for learning of the child which depends on his will to gain knowledge.

The Ministry of Women and Child Development makes laws and regulations to take care of the women and child development in India.

Social values refer to the ways by which an individual behaves in the society. If the teacher behaves ideally in class, she will be able to develop social values in her student as the students learn from their teachers.

According to Piaget, after the age of seven, children move into the second stage of morality from the first stage of the morality of constraint, and this stage is known as the Morality of Cooperation. 
The Morality of Cooperation stage is defined as the stage in which children can see from the other's point of view. They start recognising that the rules are not absolute they can be changed as per the necessary situations.
Hence, the correct answer is, 'Morality of Cooperation.'

The teachers should allow students to make some decisions about what to learn and how to learn. It helps to increase their thinking ability in critical analysis. Also, it points out their strengths and weaknesses and the students can learn well through the diagnosis of the learning gap.
Hence, the correct answer is, 'Allowing students to take some decisions about what to learn and how to learn'.

Defining a problem is called problem-solving. Problem-solving includes steps like identification of the problem, generation of solution or exploring possible strategies, anticipating outcomes, implementation, etc. But it doesn't include breaking down the problem into smaller parts in the process of problem-solving.
Hence, the correct answer is, 'Breaking down the problem into smaller parts.'

Everyone has their own viewpoint regarding any type of issue. A teacher should accept and respect the perception of every child. Negating their viewpoints can lose their confidence, and they may get reluctant to the learning. It is the duty of every teacher to encourage every child and allow them to think creatively and logically. Hence, the correct answer is, 'a teacher should not interrupt or correct students while they are trying to communicate ideas.'

Tan(90-i)=14/11.2
Cot i=14/11.2
I=cot-1(14/11.2)
I=39.4^o

• Both potentiometer and voltmeter are devices to measure potential difference.
• EMF is the terminal p.d between the electrodes of a cell in open circuit, i.e., when no current is drawn from it.
• Potentiometer measures the potential difference using null deflection method, where no current is drawn from the cell; whereas voltmeter needs a small current to show deflection.
• So, accurate measurement of p.d is done using a potentiometer.

Brewster's angle is an angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection. When unpolarized light is incident at this angle, the light that is reflected from the surface is therefore perfectly polarized.

when white light enters the prism it has actually entered out atmosphere and so the parts of the EM spectrum like UV don't appear. After the light comes out of the prism all the parts separate but we can only see the visible part i.e. 400-700nm range. So we look at only a part of the EM spectrum. Hence option B is correct.

The maximum current can be drawn from a cell if the external resistance R = 0.

When current is to be drawn at max then the conducting wire rating comes high such that resistance is less.

Resistance R = rho x l/a

Rho = resistivity constant

L=length

a=area of cross-section

Hence, if the area of cross-section increases resistance decreases by increasing the rate of current to flow.

• When a source of white light is used instead of a monochromatic source, the diffracted image of the slit gets dispersed into constituent colours of white light.
• The central maximum will be white and on either side of the central maximum, there will be coloured fringes.

Calculate the number of moles of oxygen atoms in sucrose and water, then multiply by Avogadro's number to find the total number of oxygen atoms.

If Z = 6, that means atomic number of the element is 6.The electronic configuration of the element is 2,4. Since it has 4 electrons in its outermost (valence) shell so, the valency of the element is 4.

Acids produce H⁺ ions when dissolved in water. These ions are essential to the acidic properties of the solution and play a significant role in various acid-base reactions.

Boiling of water is a physical change
Boiling of water produce water vapors. Chemically the water and water vapors composed of H₂O molecules. Here the change in physical state occurred. During this conversion The liquid is changed in to gas. On cooling these water vapors condensed into water. Hence it is a reversible reaction.

Correct Answer :- b

Explanation:- D-Fructose (levulose or fruit sugar) is the sweetest of all sugars. It is found in honey, corn syrup, and in the fruit and other parts of plants. It is much sweeter than sucrose (cane sugar).

Acid oxides is a complex chemical substance oxides, which form a salt with the chemical reactions with bases or basic oxides and do not react with acidic oxides.
Examples of acidic oxides can be:
CO₂ (all known carbon dioxide), P₂O₅ - oxide of phosphorus (formed in air if burns white phosphorus), SO₃ - oxide of sulfur (VI) is a substance used for sulfuric acid.

We have total cards = 52
4 categories=spades,clubs,diamonds and hearts
Spades and clubs are black cards
No. of favourable outcomes=13+13=26
Probability of getting a black card= no. of favourable outcomes/total no. of outcomes
=26/52=1/2

In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.

y=sin4x,  and z=cos4x
So by using chain rule
df(x)/dx = dsin⁴x/dx + dcos⁴x/dx
=dy⁴/dy * dy/dx + dz⁴/dz * dzdx
=dy⁴/dy * dsinxdx + dz⁴/dz * dcosx/dx
=4y⁽⁴⁻¹⁾⋅cosx+4z(4−1)⋅(−sinx)
=4sin³xcosx − 4cos³xsinx
=4sinxcosx(sin²x − cos²x)
=2sin2x(−cos2x)
=−2sin2xcos2x
=−sin4x

we know sin(90 - a) = cos(a) 

cos(90 - a) = sin(a)

sin(a) = 1/cosec(a)

sec(a) = 1/cos(a)

cos40 = cos(90-50) = sin50

cosec40 = cosec(90-50) = sec50

so our expression becomes

sin50/sin50 + sec50/sec50 - 4cos50 / sin40

= 1 + 1 - 4(1)   since cos50 = sin40

= -2

y = 1/(x-3)
dy/dx = d/dx(x-3)^-1
dy/dx = (-1) (x-3)^(-1-1) . d(x-3)/dx
dy/dx = -(x-3)^(-2)
dy/dx = - 1/(x-3)²
Given, slope = 2, dy/dx = 2
- 1/(x-3)² = 2
⇒ -1 = 2(x-3)²
2(x-3)² = -1
(x-3)² = -½
We know that square of any number is always positive So, (x-3)² > 0
(x-3)² = -½ is not possible
No tangent to the curve has slope 2.

xy - 3x - 2y + λ = 0.
Then abc + 2fgh − af² − bg² − ch² = 0
⇒ 3/2 − λ/4 = 0
⇒ λ = 6
∴ Equation of asymptotes is xy-3x-2y+6=0
⇒ (x-2)(y-3)=0
⇒x - 2 = 0 and y - 3 = 0