DSE Odisha TGT Science PCM Mock Test - 4 - OTET MCQ

Cotton is genetically modified using Bacillus thuringiensis (Bt) technology to resist pests, particularly bollworms.

Sardar Vallabhbhai Patel, the man responsible for uniting India's hundreds of princely kingdoms after independence, it's appropriate to remember his visit to Cuttack in 1947, which was a watershed moment in the unification of Odisha.

The summer season in Odisha officially begins in March and lasts until June. The sun is especially fierce at this time of year, and Odisha's temperatures are extremely high.

x% of a = y% of b
z × x% of a = z × y% of b

Hence, Option C is correct.

Design Principles for Screens:
- Screens use design principles that are similar to those used for printed reports.
Explanation:
- While designing screens, the same principles that are applied to printed reports are often used. This is because both mediums aim to convey information effectively and efficiently to the user or reader.
Reasons why the principles are similar:
1. Consistency: Both screens and printed reports benefit from a consistent design to ensure a cohesive and familiar experience for the user or reader. Consistency in layout, typography, color schemes, and imagery helps to establish a visual hierarchy and aids in comprehension.
2. Clarity: Clear and concise communication is essential in both screens and printed reports. Information should be presented in a logical and organized manner, with attention to readability, legibility, and the use of appropriate visuals.
3. Visual Hierarchy: Both screens and printed reports require a well-defined visual hierarchy to guide the user or reader's attention. Important information should stand out through the use of size, color, typography, and placement to ensure key messages are easily understood.
4. Usability: Screens and printed reports need to be user-friendly and intuitive. The design should consider the target audience, their needs, and the context in which the information will be consumed. Navigation, labeling, and the overall user experience are crucial in both mediums.
5. Accessibility: Both screens and printed reports should be designed with accessibility in mind. This includes considerations for individuals with visual impairments, color blindness, or other disabilities. Use of appropriate contrast, alternative text, and other accessible design practices are important in both mediums.
In conclusion, while there may be some differences in the implementation and specific considerations between screens and printed reports, the underlying design principles remain similar. Both mediums aim to effectively convey information and provide a positive user or reader experience.

Adolescence is the period in which a child develops into an adult at the onset of puberty and it marks his/her involvement in his/her peer groups.

Cognition is defined as the act of gaining knowledge through senses, thought and know-how.

Useful strategies for teaching students with mental retardation include the following:

• Teach one concept or activity component at a time
• Teach one step at a time to help support memorisation and sequencing
• Teach students in small groups, or one-on-one if possible
• Always provide multiple opportunities to practice skills in a number of different settings
• Use physical and verbal prompting to guide correct responses, and provide specific verbal praise to reinforce these responses

Adolescence is a phase of life of a person when he is no more a child and not yet an adult. Life is full of tremendous energy. Curiosity and experimentation at one time pave the path to success and at another, may cause uncertainty. 

Teachers can facilitate children's understanding of complex concepts by providing opportunities for exploration and discussion.

The Ministry of Education released the National Education Policy (NEP) in 2020. The policy aims to adapt India's educational system to the demands of the twenty-first century.

Key PointsAccording to NEP 2020, each subject's curriculum will be pared down to its core essentials, to allow room for critical thinking and more holistic, inquiry-based, discovery-based, discussion-based, and analysis-based learning.

• NEP 2020 provides a reduction in content and increased flexibility in the school curriculum.
• It promotes multilingualism in the classroom.
•  The main focus is here on constructive rather than rote learning and it must be accompanied by parallel changes in school textbooks.
• Classroom sessions will frequently include more enjoyable, creative, and exploratory activities.​
• NEP 2020 places a strong emphasis on using mother tongue, local, or regional languages at least till grade five.

Thus, NEP 2020 does not give emphasis on learning from the material given in the textbooks.

Peer Assessment: It refers to one student or a group of students assessing other students. In peer assessment, a student’s work is evaluated by other students of his/her group. The students, in a group, share their experiences and learn better from each other. In active learning, students involve in doing things and think about the things they are doing.

The language acquired from birth by a child with the help of family members is known as First Language.

Language is a tool to communicate with the world. Considering the size of the world, there have been many civilizations in different parts of the world which have developed different languages.

• A first language is a language that a person has been exposed to from birth. The first language of a child is part of the personal, social, and cultural identity.
• The language that we learn from our childhood is usually spoken by our parents, family members, and the other people around us. This is known as our first language or L1.
• Since this is the language we know best and use commonly, the government decided that the medium of instruction at the primary stage should be one’s own regional language.
• The first language is acquired naturally, through interacting with family members and friends without much formal instruction.
• But even though, we may communicate effectively in our first language, many of us do not have complete knowledge of all the sounds and letters of the language or its grammar. This is because we acquire it informally. Therefore formal instruction in the first languages is provided in the School.

Assessment is conducted in different phases of the teaching-learning process. Some assessments are conducted before the beginning of the teaching-learning process; some assessments are carried out during the teaching-learning process; and other kinds of assessments are conducted at the end of the instructional process. 

Equilibration takes place when a child strikes balance between the two processes while trying to internalise the perceived object.

Equilibration: The process of striking a balance between accommodation and assimilation. On the other hand, When the child strikes a balance between the two processes while trying to internalize the perceived object, adaptation (a relatively stable structure) takes place.

When we use a heating element that has
1. High specific resistance: a small quantity of wire is used to generate the required amount of heat or else the quantity of wire would be required higher in order to heat.
2. High melting point: a higher melting point is selected so that higher temperature is attained. Nickel and chromium alloys are ideal as a heating element.

F=-eE .
we know that,
F= ma ,
then
a=F/m.
a=-eE/m.

No current passes through the Galvanometer in the bridge balance condition.Therefore, the resistance between B and D is infinite.

Maxwell’s Fourth Equation
It is based on Ampere’s circuital law. To understand Maxwell’s fourth equation it is crucial to understand Ampere’s circuital law,
Consider a wire of current-carrying conductor with the current I, since there is an electric field there has to be a magnetic field vector around it. Ampere’s circuit law states that “The closed line integral of magnetic field vector is always equal to the total amount of scalar electric field enclosed within the path of any shape” which means the current flowing along the wire(which is a scalar quantity) is equal to the magnetic field vector (which is a vector quantity)

The frequency of an electromagnetic wave produced by the oscillator is same as that of a charged particle oscillating about its mean position i.e., 10⁹Hz.

If the current due to the auxillary battery is decreased, the potential gradient will be decreases, so the balancing length increases.Thus null point will move to fifth wire.

Ohm’s law states I is proportional to V.This holds good at steady temperatures and for the flow of constant current.

All acids contain hydrogen, but not all hydrogen-containing compounds are acids. Most acids also contain oxygen.

The old ideas were put on a scientific scale by John Dalton in the form of a theory, known as Dalton’s atomic theory,
Main postulates of which are as follows :
• All matters are made of atoms. Atoms are indivisible and indestructible.
• All atoms of a given element are identical in mass and properties.
• Atoms of different elements differ in properties and have different masses and sizes.
• Compounds are formed by a combination of two or more different kinds of atoms.
• A chemical reaction is a rearrangement of atoms.These are neither created nor destroyed in a chemical reaction

Charge on one electron is 1.6 x 10^-19 C. 
1 mole of electron 6.023 x 10²³ electrons.
So charge on one mole of electron = 1.6 x 10^-19 C x 6.023 x 10²³ = 96500 C mol^-1

• In the second and third period of the modern periodic table does not involve any d orbital so we have s and p which have 8 electrons combined.
• So for the second period, we have eight elements and for the third period, we have 8 elements so we have total of 16 elements in all.

Additional Information: 

• The second and third periods contain 8 elements each and are called short periods.
  • The 2nd-period elements: lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.
  • The 3rd-period elements: sodium, magnesium, aluminum, silicon, phosphorus, sulphur, chlorine, and argon.
• The First period contains 2 elements (Hydrogen, Helium) and is called a very short period. 

When a strong acid and a weak base combine to form a salt, the resulting compound will be acidic with a pH less than 7. This is because the presence of a strong acid will dominate the weak base, resulting in an overall acidic compound.

The correct option is C 
a=c=1/4, b=1/2
y=x is a tangent
∴ slopes are equal.
dy/dx=2ax+b
⇒1=2a+b at (1,1)⋯(1)
Also, the parabola passes through (1,1)
⇒a+b+c=1⋯(2)
The parabola passes through (−1,0)
⇒0=a−b+c⋯(3)
Solving (1),(2),(3), we get -
∴a=c=1/4
and b=1/2

y = sec⁻¹ x
by rewriting in terms of secant,
⇒ secy = x
by differentiating with respect to x,
⇒ secy tany y'= 1 by dividing by secy tany,
⇒ y'= 1/secy tany
since secy = x and tanx = √sec²y − 1 = √x²−1
⇒ y'= 1/x√x²−1
Hence, d/dx(sec⁻¹x) = 1/x√x²−1