EMRS PGT Chemistry Mock Test - 4 - EMRS MCQ

Explanation:

• Evolutionary biology: It is a field of science that deals with the study of evolutionary processes like natural selection, speciation & common descent that has led to the diversification of life on earth.
• Charles Darwin is known as the father of ''Evolutionary Biology''.
• Darwin proposed a theory of evolution called natural selection in the year 1859. According to it those populations which are a better fit (reproductively fit) in an environment will be selected by nature and will survive more.
• Charles Darwin wrote a book named ''The origin of species'' which is considered to be the foundation of evolutionary biology.

Additional Information 

• Herbert Spencer- He Was best known for the introduction and application of evolutionary theory to philosophy, psychology, and social sciences
• The famous phrase 'Survival of the fittest' to mean Natural Selection was coined by Herbert Spencer. He originated this phrase after the publication of famous biologist Charles Darwin’s book ‘Origin of Species’ which talked about ‘Natural Selection’.
• Julian Huxley was an English biologist, philosopher, educator, and author who greatly influenced the modern development of embryology, systematics, and studies of behaviour and evolution.
• Stanley Miller along with H.C. Urey provided experimental evidence of ''chemical evolution''

Concept:

• Plants have different types of roots.
• Some store food, some breathe some hang from the branches.

Explanation:

• Roots are the underground structures that help in the absorption of water and minerals provide a proper anchorage to the plant parts, storage of reserve food material (Carrot, Radish), and synthesis of PGR (plant growth regulators).
• Sometimes roots get modified to perform different functions like storage of food, respiration, climbing, etc.
• These types of roots are called modified roots.
• Examples - prop root of the Banyan tree for providing support, Pneumatophores of Rhizophora, and Mangrove plants for respiration.

So, these statements are correct.

• To give support to the plant.
• To store food.
• To absorb water and minerals.

Thus, roots do not function to provide humus.

The first figure is a triangle, then there are 3 line segments inside it.

Similarly,

Circle, then there should be 3 line segments inside it.

The figure is shown below:-

Hence, Option (2) is the correct answer.

Decoding the information, 

Given:

14 ÷ 2 + 8 × 5

After replacing the signs from left to right and using the BODMAS rule,

14 + 2 × 8 - 5

= 14 + 16 - 5

= 30 - 5

= 25

Hence, “25” is the correct answer.

The logic that follows here is 

1) D is sitting to the immediate left of A.

2) C is sitting to the immediate right of B.

3) B is not sitting adjacent to A.

The final seating arrangement will be

Second to the right of D is 'E'.

Hence, the correct answer is E.

The pattern followed here is:

The positional value of the letter is given as their code.

Given code:

PASS → 1611919

Similarly,

Thus ASAP → 119116

Hence, the correct answer is "119116".

The pattern followed is:

Hence, the correct answer is "216".

Logic: The alphabet that comes first alphabetically, comes first in the dictionary.

So, the correct arrangement should be:

2. Subtle.

4. Sucres.

3. Sudoku.

1. Sugary.

5. Sullen.

Hence, the correct answer is "2, 4, 3, 1, 5".

Microsoft Word or MS-WORD (often called Word) is a Graphical word processing program that users can type with. It is made by the computer company Microsoft. Its purpose is to allow users to type and save documents. It's an application software

A file extension tells its type. Multimedia files commonly have .png, .wav, .mp3, .mpeg extensions.

The academic performance of students can be improved if parents are encouraged to supervise the work of their wards. Parents should choose to become involved in homework. They should be involved, believe their involvement will make a positive difference in their children's learning, and perceive that their involvement is invited, expected, and valued by school personnel. The parents need to be engaged in a wide range of activities in this effort, from establishment of basic structures for homework performance to more complex efforts focused on teaching for understanding and helping students develop effective learning strategies.

Reflexive teaching helps the teacher to self-evaluate his/her own teaching abilities. This involves the participation of both the teacher and the students. It tells the teacher about the actions that he/she takes in the classroom and the reasons behind it. The main concept is to collect and analyse both classroom and teaching data, and evaluate methodologies to achieve the goals of teaching.

Primary level students learn more by observing pictures and specimens. Thus, they are most effective in teaching primary level students. Pictures and specimens are important visual tools which facilitate learning.

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.

[Co(NH₃)₄Br₂]CI can show both geometrical and ionisation isomerism.

[Co(NH₃)₄Br₂]CI or [Co(NH₃)₄BrCI]Br

The correct answer is Option D.

The catalyst is unchanged chemically at the end of a reaction. During the reaction between the chemical intermediates and the reactants, the catalyst is regenerated.
The catalyst accelerated the reaction. A catalyst is a substance which speeds up a reaction but is chemically unchanged at the end of the reaction.
In a reversible reaction, the catalyst  does not alter the equilibrium position but increases the rate by decreasing activation energy and temperature.
A small amount of catalyst is often sufficient to bring about a large change in reaction. Catalytic action is a chemical reaction between the catalyst and a reactant, forming chemical intermediates that are able to react more readily with each other or with another reactant to form the desired end product.

On protonated epoxide, nucleophilic attack occur at α-carbon Where more stable carbocation could be formed.

Dialysis we use, salt solution of approximately same concentration outside the artificial blood capillary, so that urea comes out of the blood, but other useful substances like NaCl , blood cell etc does not. Blood is a colloid.

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. 

Both statements are true but the two different products are due to resonance in carbocation intermediate as

The students can be seen waiting for their results in the given statement. Thus, it has to be in the present continuous tense.
Option 3 is the only option that makes an appropriate fit in the given sentence. 

Example- If the world had a lot of mavericks, the problem of religious violence wouldn't be there.

Latent represents something that is apparent or superficial and that cannot be easily seen. 
Incensed means enraged, soporific represents something that causes sleep whereas spurn means to refuse. Thus, option 1 is appropriate.
Example- He has a huge reserve of latent talent in him.

To 'bury the hatchet' is to 'end a fight'. Therefore, the correct meaning is 'make peace'.

• राजभवन‍ का विग्रह ‘राजा का भवन’ होगा।
• राजभवन शब्द में तत्पुरुष समास है।

Key Pointsतत्पुरुष समास​ :

• तत्पुरुष समास वह होता है, जिसमें उत्तरपद प्रधान होता है, अर्थात प्रथम पद गौण होता है एवं उत्तर पद की प्रधानता होती है व समास करते वक़्त बीच की विभक्ति का लोप हो जाता है।
• इस समास में आने वाले कारक चिन्हों को, से, के लिए, से, का/के/की, में, पर आदि का लोप होता है।

उदाहरण :

• ग्रामवासी शब्द का विग्रह : ग्राम का निवासी।
• धर्मग्रंथ शब्द का विग्रह : धर्म का ग्रंथ।
• मांसाहारी शब्द का विग्रह : मांस को खाने वाला।

Additional Information

समास:- समास उस प्रक्रिया को कहते हैं, जिसमें दो शब्द मिलाकर उनके बीच के संबंधसूचक आदि का लोप करके नया शब्द बनाया जाता है।
समास के माध्यम से कम शब्दों में अधिक अर्थ प्रकट किया जाता है।
जैसे - युद्धभूमि - युद्ध के लिए भूमि।

• समास के छः प्रकार हैं।
  • अव्ययीभाव समास
  • सतत्पुरुष समास
  • कर्मधारय समास
  • द्विगु समास
  • द्वन्द समास
  • बहुव्रीहि समास

‘देशविदेश’ में 'द्वन्‍द्व' समास है।इसका समास विग्रह होगा- देश और विदेश। अन्य विकल्प गलत हैं । अतः उत्तर सही विकल्प 3 'देशविदेश​' है।

Key Points

• 'देशविदेश' का समास विग्रह करने पर 'देश और विदेश' होगा।
• इसमें दो प्रमुख पदों के मध्य 'और' योजक का प्रयोग होने के कारण द्वंद्व समास है।

अन्य विकल्प -

Additional Information