EMRS PGT Chemistry Mock Test - 5 - EMRS MCQ

The correct answer is b, a, d, c.

Key Points

• French Revolution:
  • The French Revolution was a mass movement that shook France and had a far-reaching impact on the world.
  • It was Lasting from 1789 to 1799, it is regarded as one of the most important events in world history.
  • The Revolution began with the rebellion of the Third Estate, which comprised a large majority of the population but was neglected.
  • The representatives of the Third Estate took the Tennis Court Oath on June 20, 1789 pledging not to separate until they had given France a constitution.
  • This was followed by the Storming of the Bastille and the Women’s March on Versailles, incidents through which the Revolution gathered momentum.
  • The execution of King Louis XVI and his wife Marie Antoinette resulted in the Revolution entering its most bloody stage known as the Reign of Terror.
  • A coup, led by Napoleon Bonaparte in 1799 brought an end to the French Revolution with the establishment of a Consulate and later an Empire.
  • Major events and their date of the french revolution:
  • Formation of National Assembly- 13 June 1789
  • Fall of Bastille- 15 July 1789
  • Declaration of the Rights of Man- 26 August 1789
  • Establishment of the French Republic-  21 September 1792

Additional Information

•  Other major events of the French Revolution and their dates:

The correct answer is Seven Five Year Plan.

Key Points

• Seventh Five-Year Plan(1985-1990):
  • ​The Seventh Plan aims at extending the green revolution to new areas through its emphasis on raising the productivity of rice in the eastern region and rainfed and dryland agriculture. This should lead to faster growth in agricultural output in areas that, in the national context, are economically backward.
    • The induction of new technologies and the pursuit of economic growth should not be at the expense of the environment. In the long run, environmentally sound policies are also developmentally sound ones.
    • Provide gainful employment to the unemployed, particularly women and youth,
    • Raise the earnings of those already employed in low-paid jobs.
    • Step-up the productivity and earnings of those who are self-employed workers.
    • Improve the access of the urban poor to basic amenities like education, health care, sanitation, and safe drinking water.

Additional Information

In the question,

11² = 121

13² = 169

17² = 289

19² = 361

23² = 529

24² = 576

Thus we can say except for (24)² , all the given number is a square of a prime number.

Hence, Option (2) is correct.

The logic follows here is:-

1st and 3rd letters are interchanged.

4th and 6th letters are interchanged.

And 2nd letter is placed as it is.

Similarly,

Hence, the correct answer is "TNMFED".

Trapezoid, Rhombus, and Parallelogram are the 2 dimensional figure.

While;

Prism is a 3-dimensional figure.

Hence, "Prism" is the correct answer.

Important Points

The pattern followed here is:

Hence, the correct answer is "L".

in the figure the 8 triangle is shown easily and another is COD , DOB, BOA, AOC, ACD, BDC,ABC, ABD so that total no. of triangle is 8 + 8 = 16

3D models are created using geometrical shapes such as polygons, straight lines, arcs, curves, etc. These 3D models are used in television, film, gaming and architecture industries.

The correct answer is B.

Statement I:
cis-2-Butene on reaction with cold dilute KMnO4,
the solution produces meso2,3butanediol.
It is a dihydroxylation reaction and two -OH groups are added across the C=C bond.

Statement II:
2KMnO₄ + H₂O + KI → 2MnO₂ + 2KOH + KIO₃
​
I + 6OH⁻→ IO₃− + 3H2O + 6e⁻
When alkaline KMnO4 is treated with KI, I−
is oxidised to IO₃⁻
But, Statement II is not the correct explanation of Statement I.

(b) Unit cell of fee is divided into eight small cubes. Each cube has four atoms at alternate positions. When joined to each other, they make a regular tetrahedron.
Thus, number of tetrahedral void in small cube = 1 and in eight cubes, voids = 8.

Note  If number of atoms in a cube = N, then, number of octahedral voids = N and number of tetrahedral voids = 2N

Langmuir isotherm assume monolayer formation only.

From I, total mass of reactant, 36 gm
So, ∆H/mass = -483.636/36 = -13.43 kJ gm^-1
For II, total mass of reactant, 54 gm
So, ∆H/mass = -868.2/54 = -16.07 kJ gm^-1
FOr III, total mass = 36 gm,  
So, ∆H/mass = -347.33/36 = -9.64 kJ gm^-1
Therefore, heat released per unit mass is maximum for II.

NH₃  is used as cooling liquid in refrigerators.

The aufbau principle explains how electrons fill low energy orbitals (closer to the nucleus) before they fill higher energy ones. Where there is a choice between orbitals of equal energy, they fill the orbitals singly as far as possible(Hunds rule). The diagram summarizes the energies of the orbitals up to the 4p level.Therefore 3d orbitals have higher energy than the other orbitals in the options.

So answer is: (2) n = 3, l = 2, m = 1, s = +1⁄2

The interparticle forces are strongest in NH₃ (Hydrogen bonding). In PH₃ and AsH₃ the inter-particle forces are dipole-dipole forces which are relatively stronger in AsH₃(due to higher mass of AsH₃). So the increasing order of vaporization is PH₃<AsH₃<NH₃ .

PCl₅ dissociation a closed container

Concept of Reducing Agent:
A reducing agent is a substance that loses or "donates" an electron to another substance in a redox chemical reaction. Therefore, a good reducing agent is the one that gets oxidized easily, or in other words, the one that can easily lose electrons.

Characteristics of a Good Reducing Agent:

• Electron Loss: A better reducing agent is the one that loses more electrons. This is because by losing electrons, the reducing agent gets oxidized and in turn reduces the other substance. This is the basic principle of a redox reaction.
• Reactivity: The reactivity of the metal also determines its capacity as a reducing agent. Metals that are high in the reactivity series are good reducing agents. This is because they can easily lose electrons and get oxidized.
• Stability: Metals that are less stable are better reducing agents because they can easily lose electrons to attain a stable state.

Hence, Option A is the correct answer - a better reducing agent is the one that loses more electrons.

(d) PI₃ does not form di iodide with vicinal diols.

Stability of hydrides decreases down the group so most stable is H₂O  

Maleic Acid shows Geometrical Isomerism but does not give optical isomerism.

Let, oxidation number of Fe = x

α-carbon is achiral, hence retention of configuration at β-carbon.

Both nucleotide and nucleoside have pentose sugar and nitrogenous base. Nucleotide differs from nucleoside with the presence of phosphoric acid as nucleoside do not have phosphoric acid.

Determinants of Individual differences in human beings relate to both heredity and environment interacting together. By heredity we mean the influence of factors inherent in the child himself from the time he is conceived. Environment also plays a key role in the individual's development.

The National Education Policy 2020 aims to bring transformational reforms in school and higher education and thus shape India into a global knowledge superpower.

• This policy will usher in sweeping changes to the education policy of the country, including a renaming of the Ministry of Human Resource Development as the Education Ministry.

Key Points

• NEP 2020 is based on the principle that education must develop not only cognitive capacities but also social, ethical, and emotional capacities and dispositions.  
• < />NEP-2020 has given emphasis on conceptual understanding, creativity and critical thinking, human ethical values, and constitutional values.
• < /> It proposes that experiential learning should be encouraged to promote conceptual understanding as experiential learning refers to learning by gaining experience through active involvement. 
• As per National education policy 2020, education must adopt experiential learning including hands-on learning, arts-integrated and sports-integrated education, story-telling-based pedagogy, etc.

Hence, it can be concluded that National Education Policy 2020 states that learning should be experiential.

The correct form of the word would be 'likes'. This is because the subject of the sentence is singular. 

The statement shows that ONGC is claiming to have started a new refinery at Digboi. This shows an activity that has been executed in the past and the sentence has to be in the simple past tense.
Thus only option 3 fulfills this criteria and hence is correct. 

सही उत्तर है - "सभी-शैव" lKey Points

• सर्व का अर्थ है - सभी l
• शर्व का अर्थ है - शैव l
• इसलिए यह सही उत्तर है l

अन्य विकल्पों का विश्लेषण:-

• शव शब्द का अर्थ है - मृतक का शरीर, लाश l
• सही का अर्थ है - ठीक l
• शाकाहारी का अर्थ है - वह जो बस वनस्पति खाता है l
• इन तीनों शब्द जोड़ों में एक- एक शब्द का अलग अर्थ है, इसलिए यह तीनों प्रश्न में दिए गए शब्द- युग्म के सही अर्थ को नहीं बताते l

Additional Information

• सर्व-शर्व यह दोनों श्रुतिसम भिन्नार्थक शब्दों के उदाहरण है जो सुनने में एक जैसे लगते हैं, और वर्तनी में भी कुछ सामान ही होते हैं, लेकिन इनके अर्थ बिल्कुल अलग-अलग होते हैं l
• ऐसे कुछ शब्दों के उदाहरण:-
• चर्म- चमड़ा
  • चरम- अत्यधिक
• हय- घोड़ा
  • हिय- हृदय
• श्रवण- सुनना, कान
  • श्रमण- बौद्ध संन्यासी