Bihar STET Paper 1 Science Mock Test - 6 - Bihar PGT/TGT/PRT MCQ

To determine the order of animal food products based on their fat and protein content, we need to compare the three options - fish, egg, and meat - in each set. We are looking for the set that contains the animal food products in the order of more fats, more proteins, and least fat.
Let's analyze each set one by one:
Set A: Fish, Egg, Meat
- Fish: Generally low in fat and high in protein.
- Egg: Contains moderate amounts of fat and high-quality protein.
- Meat: Can vary in fat content depending on the type, but generally contains higher amounts of fat compared to fish and eggs.
Set B: Meat, Milk, Egg
- Meat: Can vary in fat content, but generally contains higher amounts of fat compared to milk and eggs.
- Milk: Contains moderate amounts of fat and protein.
- Egg: Contains moderate amounts of fat and high-quality protein.
Set C: Milk, Meat, Fish
- Milk: Contains moderate amounts of fat and protein.
- Meat: Can vary in fat content, but generally contains higher amounts of fat compared to milk and fish.
- Fish: Generally low in fat and high in protein.
Set D: Egg, Meat, Fish
- Egg: Contains moderate amounts of fat and high-quality protein.
- Meat: Can vary in fat content, but generally contains higher amounts of fat compared to eggs and fish.
- Fish: Generally low in fat and high in protein.
Based on the analysis, we can conclude that Set D: Egg, Meat, Fish contains the animal food products in the order of more fats, more proteins, and least fat among them.

A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter."

The generation of electricity from the ocean is possible by harnessing the energy present in waves. This energy can be utilized to produce electricity through various methods such as wave energy converters. Additionally, the ocean also contains stored thermal energy, which can be tapped into to generate electricity using technologies like ocean thermal energy conversion (OTEC).
Here is a detailed explanation of the options:
A: Kinetic energy of the waves but not stored thermal energy
- Waves possess kinetic energy due to the motion of water particles. This energy can be harnessed using wave energy converters to generate electricity.
- However, this option states that stored thermal energy cannot be utilized, which is incorrect.
B: Stored thermal energy but not kinetic energy of the waves
- This option states that only stored thermal energy can be used to generate electricity from the ocean, neglecting the kinetic energy of the waves.
- Waves have significant kinetic energy that can be converted into electricity, making this option incorrect.
C: Kinetic energy of the waves as well as stored thermal energy
- This option correctly states that both kinetic energy of the waves and stored thermal energy can be utilized for electricity generation.
- Wave energy converters can harness the kinetic energy of waves, while OTEC systems can extract heat from the ocean's thermal gradient to generate power.
D: Neither kinetic energy of the waves nor stored thermal energy
- This option states that both kinetic energy of the waves and stored thermal energy cannot be used for electricity generation, which is incorrect.
Therefore, the correct answer is option C: Kinetic energy of the waves as well as stored thermal energy.

In redox reactions, if a substance gains oxygen or loses hydrogen, it is considered to be oxidised. This process involves the increase in the oxidation state of an atom or molecule. Oxidation results in the loss of electrons or an increase in oxidation state. Therefore, when a substance gains oxygen or loses hydrogen during a reaction, it is undergoing oxidation.

Explanation: Sexual reproduction involves the participation of two parents for the process of reproduction. During fertilization, the fusion of male and female gametes results in the creation of a zygote with a full set of chromosomes. This leads to the sharing of genetic information between the parents.

The simplest organic compounds are made up of only carbon and hydrogen atoms. Compounds of carbon and hydrogen only are called hydrocarbons. For example, methane.

The molar mass of water (H₂O) is approximately 18 g/mol.
For 360 g of water, the number of moles = 360 g / 18 g/mol = 20 moles.
Number of molecules = 20 moles × 6.022 × 10²³ molecules/mole ≈ 1.2044 × 10²⁵ molecules.

Gibberellins promote cell division in plants.

The molecular weight of CuSO4.5H2O can be calculated by adding up the atomic weights of its constituent elements.
1. Cu (copper) has an atomic weight of 63.5 u.
2. S (sulfur) has an atomic weight of 32 u.
3. O (oxygen) has an atomic weight of 16 u.
4. H (hydrogen) has an atomic weight of 1 u.
To calculate the molecular weight of CuSO4.5H2O, we need to consider the number of atoms of each element in the compound:
1. Cu: There is only one Cu atom in the compound, so its contribution to the molecular weight is 63.5 u.
2. S: There is one S atom in the compound, so its contribution to the molecular weight is 32 u.
3. O: There are four O atoms in the compound, so their total contribution to the molecular weight is 4 * 16 u = 64 u.
4. H: There are ten H atoms in the compound, so their total contribution to the molecular weight is 10 * 1 u = 10 u.
5. Additionally, there is a water molecule (H2O) attached to the CuSO4 molecule. The molecular weight of H2O is 18 u.
Now, let's calculate the molecular weight:
Cu: 1 * 63.5 u = 63.5 u
S: 1 * 32 u = 32 u
O: 4 * 16 u = 64 u
H: 10 * 1 u = 10 u
H2O: 1 * 18 u = 18 u
Total molecular weight = 63.5 u + 32 u + 64 u + 10 u + 18 u = 187.5 u
Therefore, the molecular weight of CuSO4.5H2O is 187.5 u.
The correct answer is not listed among the given options. Please recheck the options or provide the correct answer.

Artificial ecosystems, like gardens or aquariums, are man-made environments where humans control and manipulate the ecosystem's components. Unlike natural ecosystems, which develop independently, artificial ecosystems are created by humans for specific purposes such as growing specific plants or keeping certain animals in captivity.

Animal cell that do not contain nuclei also lack in chromosome. As chromosome is present in the nucleus of the cell.

De Vries Mutation Theory:
The De Vries mutation theory, proposed by Dutch botanist Hugo de Vries in the late 19th century, revolutionized the understanding of genetic inheritance. De Vries conducted extensive research on plant hybrids and discovered the concept of mutation, which challenged the prevailing theory of blending inheritance.
Plant Popularized by De Vries Mutation Theory:
The plant that was made popular by the De Vries mutation theory is Oenothera lamarkiana. This plant species, also known as Lamarck's evening primrose, played a significant role in De Vries' studies on mutations. He observed sudden and heritable changes in the traits of Oenothera lamarkiana, which led him to propose the concept of mutation as a mechanism for genetic variation.
Other Options:
While Oenothera lamarkiana is the correct answer, it's helpful to know about the other options as well:
- Triticum vulgare: This refers to common wheat, which is not directly associated with De Vries' mutation theory.
- Pisum sativum: This refers to garden pea, which is famous for Gregor Mendel's experiments on inheritance, not specifically related to De Vries' research.
- Primula vulgaris: This refers to the common primrose, which is not directly linked to De Vries' mutation theory.
Conclusion:
Oenothera lamarkiana is the plant species that gained prominence through the De Vries mutation theory. De Vries' research on this plant demonstrated the occurrence of sudden and heritable changes, leading to the concept of mutation as a mechanism for genetic variation.

Only those variation which are useful and have advantage get selected.

The change of solid directly into vapours is called  Sublimation. The change of liquid state into vapours without coming to it's boiling point is called Evaporation. The latent heat of Vaporization is the heat required to change the state of 1 kg into vapours. Latent heat of fusion is the heat required to Change the state of 1 kg of solid  into liquid.

Teaching-learning materials (TLMs) are tools used by teachers to help learners learn concepts with ease and efficiency. TLMs have been in existence in our educational system since ancient times.

• The role of TLMs in the classroom is to make learning real, practical and fun for children. Teachers use TLMs to illustrate or reinforce a skill, fact or idea.
• TLMs also help in bringing novelty and freshness in classroom teaching as it relieves learners from anxiety, fear and boredom. Teaching-learning materials provide a range of learning experiences to learners from direct to indirect.

Key Points

Teachers should guide and facilitate students to construct simple TLMs themselves. Students should be divided into groups and each group be assigned the task of design and development of TLMs. As a teacher, you may adopt many strategies in motivating students.

In an activity aids, the learner directly involves through participation and direct experience. These type of teaching aids are really of great value as they put students in the role of an active constructor of knowledge. Following are some important activity teaching aids, listed below:-

• Field Trip
• Demonstration
• Experiments
• Dramatization

Thus, it is clear that an overhead projector is not an activity aids related to teaching-learning materials.
Additional Information

Overhead Projector (OHP) helps in displaying still visual material as a projection on a screen. It is a simple projector which is very easy to operate and therefore, popular among teacher. It is better than using a chalkboard as it helps teachers talk and show visuals simultaneously. As a teacher, you can observe the reaction of students and interact with them. It also helps in saving time as you can use these visuals/transparencies again and again. OHP does not require a darkened room and is easy to handle and transport from one classroom to another.

Learning takes place by comparing previous knowledge and experience with the present learning experience through thinking and activities. Learning is a universal skill seen in all species. Thinking and Learning are two interwoven activities that help to develop knowledge, critical thinking, and creative thinking.

Key Points

•  Despite the addition of more specialized disciplines and subject instructors, experiential learning within each subject and investigations of relationships among different subjects will be encouraged and highlighted.
• Experiential learning will be implemented at all levels, with investigations of the connections between various disciplines as well as hands-on learning, education that incorporates the arts and sports, and pedagogy centered on telling stories, among others, as normal practices within each subject.
• Classroom activities will change to competency-based learning and teaching to address the achievement gap in learning outcomes. Additionally, the assessment instruments—including assessment "as," "of," and "for" learning—will be in line with the learning objectives, skills, and attitudes that are listed for each subject in a given class.
• Each subject's curriculum will be edited down to the fundamentals in order to allow room for critical thinking and more all-encompassing, inquiry-based, discovery-based, discussion-based, and analysis-based learning.

Hence, National Education Policy 2020 proposes that experiential learning should be encouraged to promote critical thinking. 

Multiple means of discrimination is not a part of universal design for learning guidelines.

Aarav's behavior suggests that he may be experiencing difficulty with his vision, such as nearsightedness or myopia, which can cause him to need to sit closer to the blackboard and hold the book closer to his eyes in order to see clearly.

Key Points

• The teacher should consult with school administrators and/or parents to explore the possibility of Aarav having an undiagnosed vision problem.
• Seeking professional support from an optometrist or ophthalmologist can help determine if Aarav needs corrective lenses or other interventions to improve his vision.
• If Aarav is diagnosed with a vision problem, appropriate accommodations can be made in the classroom, such as providing him with a seat closer to the blackboard or providing him with a larger print version of the reading material.

Thus, it is concluded that seeking professional support to check for low vision is the correct answer.

Teaching can be Direct and Indirect.

1. Direct teaching methods:
   • Teachers use methods such as lectures, demonstrations, etc, in this type of teaching.
   • It engages students in the face – to – face interaction.
2. Indirect teaching 
   • In this type of teaching active methods such as role-play, project, assignment, inquiry, or other such activities are used.
   • Indirect methods are basically Learner-centered methods where the students are actively involved in the teaching-learning process. 

Note: Lecturing with examples, team teaching, and demonstration on a subject; all the three methods are direct in nature and are teacher-centered. 

Hence, The only collaborative project method is learner-centered and indirect in nature among all four. Therefore, a collaborative project method of teaching will encourage indirect learning in the student.

The Assessment process should not be boring, or it should be on the basis of only one aspect. The teacher should be careful about using a variety of ways to collect information, about the students learning across scholastic and co-scholastic boundaries. Only scholastic areas should not be focused on assessment. It should also include co-scholastic areas.
Hence, the correct answer is, 'Using a variety of ways to collect information about the students learning across scholastic and co-scholastic boundaries.'

The National Education Policy (NEP) was approved by the Union Cabinet in July 2020 and aims to implement various improvements to the Indian educational system from the school level to the college level.

Key Points

• According to NEP 2020, Children from 3 to 18 years old will have access to a free and compulsory high-quality education.
• This implies that all children between the ages of 3 and 18 will be entitled to receive a quality education from the government, regardless of their socioeconomic status.
• Everyone has access to get-quality education for all children from the age of 3-18 years instead of 6-14 years as per the RTE 2009.

 Therefore, the Arrangement of free and compulsory education for 3-18-year-old students are the changes required to be made in RTE 2009 as per NEP 2020.

Additional Information

• Right to Education Act (RTE) provided free and compulsory education to children between the age group of 6-14 years in 2009 and enforced it as a fundamental right under Article 21-A.
• India became one of 135 countries to make education a fundamental right of every child when the Act came into force on 1 April 2010.

Action research in education can be defined as the process of studying a school situation to understand and improve the quality of the educative process. It is an attractive option for teacher researchers, school administrative staff, and other stakeholders in the teaching and learning environment to consider. . It provides practitioners with new knowledge and understanding about how to improve educational practices or resolve significant problems in classrooms and school. 

The Deccan Plateau is a plateau in India which covers the maximum part of the southern part of India.

The pattern followed is:

Top right number = multiplication of top left number and bottom number 

In fig 1:

729 = 81 × 9

729 = 729

In fig 2:

512 = 64 × 8

512 = 512

Similarly,

In fig 3:

? = 49 × 7

? = 343 

Hence, the correct answer is "343".

For this question, we will use the given table-

The relation of NZ : MA  is given below-

Similarly,

We will apply the same relation to TV : ? as-

Hence, Option (3) is correct.