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

Protoplasm is a colour less material that has a living part of a cell which includes the cytoplasm, nucleus, and other organelles.
Cytoplasm is a substance which is similar to jelly and is surrounded by the nucleus within the cell membrane.

Brass is a homogenous mixture of 70% of Copper and 30% Zinc by mass. Copper and Zinc forms homogenous mixture as constituent particles are not visible

Having nephrons packed close together maximizes the kidney's ability to filter blood efficiently by providing a large surface area for filtration.

The correct option is D.
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered.

Intergenerational equity is the concept or idea of fairness or justice between generations.

Intra- generational equity is concerned with equity between people of the same generation and aims to assure justice among human beings that are alive today.

We can define Sustainable development as development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Intergenerational and intra- generational equity are the underlying principles of sustainable development as:

Intergenerational equity tends to a fair utilization of resources by human generations in past, present and future, it tries to construct a balance of consumption of resources by existing societies and future generations.

Intra-generational equity makes sure that the resources which are not preserved for the future generation and are available for the current generation must be equally distributed among all the members of the present generation.

Plants communicate information between cells via hormonal secretions.

Ba(OH)₂+2NH₄CI⟶BaCl₂+2NH₃+2H₂O

Above is the balanced reaction. Barium hydoxide has two oxygen atoms, so in product it gives two H₂O molecule.

Since the person can't read an object at a distance of 50 cm, therefore focal length must be 0.5 m. We know that ; 
P = 1/f , hence, P = 1/0.5 = 2 dioptre. 

Offspring exhibit similarities as well as variation from parents.

Power generated in a windmill depends on the velocity with which wind is moving.

Sun is the ultimate source of energy directly or indirectly, all the form of energy are desired from solar energy.

H₂CO₃ + NaOH → NaHCO₃ + H₂O

Most prokaryotes contain one circular chromosome. DNA communicateswith the cytoplasm- so it allows direct connection to the transcription and translation. Contain only one copy of the gene. Non essential genes are stored outside of chromosome - in Plasmids.

Silver chloride, silver bromide (AgBr) and silver iodide (AgI) are the three silver "halide" compounds used in photography.

The reaction in which an element or molecule is added to unsaturated hydrocarbons is called addition reaction.

Childhood refers to the period of the human lifespan, ranging from birth to puberty. It consists of many developmental stages and 'adolescence' is one of them.

• 'Adolescence' comes from the Latin word 'Adolescere' which means 'to grow to become mature'. It a stage which lies between the age of '12 to 19 years'.
• Emotion is a mental state associated with fear, anger, love, etc. Emotional states of an individual are the combination of physiological arousal, psychological appraisal, and behavioral changes.
• Emotionally disturbed children can be defined in terms of certain observable characteristics such as withdrawn behavior, failure to achieve a level reasonably commensurate with ability or tendency towards fighting, and other aggressive behavior.

​Key Points

Emotional disturbances of adolescents:

• They show the same emotions as they used to show in their childhood  i.e., fear, disgust, but the emotions of adolescence are different in their patterns.
• The emotions at this stage are more uncontrolled, intensive, and irrational.  As they gradually grow, their emotional behavior improves and become mature.
• Children who suffer from emotional disturbances generally do nail-biting, thumb sucking, depression, pulling or stretching of hairs, fear of specific objects or things, etc.
• A child wearing a well-fitted dress is not a symptom of emotional disturbance but wearing proper clothes that fit them well makes them confident.

Hence, it could be concluded that wearing a well-fitted dress is not found in the symptoms of emotional disturbances of adolescents.

To have confidence that a test is valid, and thus the inferences we make based on the test scores are valid, three kinds of validity evidence are:

Construct- It is the extent to which the content of the test matches the instructional objectives.

Criterion- It is the extent to which scores on the test are in agreement with or predict an external criterion.

Content- It is the extent to which an assessment corresponds to other variables, as predicted by some rationale or theory.

The term 'Curriculum' within the field of education refers to the overall program of the varsity which students experience on a day-to-day basis. It is a planned sequence of instruction in terms of educator's and school's instructional goals. as a gaggle of learning goals. It is attached across grades that outline the intended mathematics content and process goals at particular points in time throughout the K–12 school program.
Hence, the correct answer is, 'Overall programme of the school which students experience on a day-to-day basis.'

Cooperation teaches the values of committing oneself to the common good, seeing success as depending on the efforts of all participants, feeling happy when others succeed, seeing others as resources to help one succeed, viewing worth as unconditional, and viewing diverse others in positive ways.
Cooperative learning is a teaching way for students to learn essential interpersonal life-skills and develop the ability to work collaboratively, a skill now greatly in demand in the workplace. Thus, it provides faster and efficient learning. In cooperative learning, the diverse students in the school are to be transformed into a symphony. Students need positive self-esteem, the psychological health to face conflict and challenge, and the social competencies required to work effectively with diverse peers. Personal and superordinate identities are developed through group processes.

The question 'What specialities of Einstein impressed you the most and why?' is most appropriate to evaluate the thought process of a student as it takes into consideration student's thinking. This makes students to choose from among multiple answers and hence they could be engaged in thinking rationally. The answers that come out are also subjective, unlike the direct questions, which fail to evaluate the thought process of students.

A teacher who changes the method of teaching according to the students and requirements is said to be research minded. This is a very good quality of a teacher by which he/she involves students by engaging them with different interests. A teacher who is always thinking about something may be introspecting but not research minded.

Teachers in multi-age classrooms are encouraged to use a range of teaching and assessment strategies to address the different ages of their students, implement flexible patterns of grouping, accommodate specific learning goals, engage all students in active participation, and promote a climate of respect for oneself and others.

All the three sentences are correct. Teaching aids, when used moderately, enhance teaching efficiency. Use of teaching aids fosters motivation and they also emphasise learning by doing. Teaching aids are a means of enhancing learning without boredom and keeping the students engaged. So, they are a very important teaching tool.

Documents obtained through an RTI application by Tamil Nadu’s BJP chief K. Annamalai reveal India’s inconsistent approach to the Katchatheevu island dispute with Sri Lanka. Katchatheevu, a small island in the Palk Strait, lacks a permanent settlement and freshwater source. Administered by both India and Sri Lanka historically, a 1974 agreement marked its boundary. Indian fishermen, particularly from Tamil Nadu, face challenges due to conflicting claims over the island.

IIT Bombay is ranked 45th globally in engineering according to the QS World University Rankings 2024, highlighting its excellence in the field and its leading position in South Asia.

Nigeria leads the global fight against meningitis, introducing the groundbreaking Men5CV vaccine, endorsed by WHO, targeting five strains in one shot. This surpasses previous vaccines, vital as bacterial meningitis, prevalent in Africa, poses serious health risks. Africa’s “meningitis belt,” including Nigeria, faces escalating cases, with a 50% rise reported last year by WHO. Nigeria’s pioneering move sets a precedent for broader adoption worldwide, marking a significant stride in public health.