EMRS PGT Chemistry Mock Test - 5 - EMRS MCQ

 The correct answer is Humus.​

Key Points

• Humus is a dark, organic matter that forms in soil when a plant or living matter decays. 
• Humus is formed by the decomposing action of soil microorganisms (e.g., bacteria and fungi), which break down animal and vegetable material into elements that can be used by growing plants. 
• Humus is an important biological constituent of fertile soil.
• It contains many useful nutrients for healthy soil. One of the most important is nitrogen. Nitrogen is a key nutrient for most plants. 
• Agriculture depends on nitrogen and other nutrients found in humus.
• When humus is in soil, the soil will crumble, and water moves easily through the loose soil so that oxygen can reach the roots of plants.
• When people compost, they collect decaying organic material, such as food and garden scraps, that turned into soil, It produces Humus in soil.

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

Given number: 7 8 3 4 3 2 9 5 1 3

After interchanging the digits,
New number: 8 7 4 3 2 3 5 9 3 1

6th digit from right end

Identification of Terms:
1. It is also referred to as a web address.
2. It specifies the internet address of a file stored on a host computer or server connected to the internet.

The terms in question can be identified as follows:
1. Web browser:
- A web browser is a software application used to access and view websites on the internet.
- It allows users to interact with web pages, access information, and navigate the internet.
2. URL (Uniform Resource Locator):
- A URL is a string of characters that specifies the location of a resource on the internet.
- It is also commonly referred to as a web address.
- A URL consists of various components, including the protocol (e.g., HTTP or HTTPS), the domain name (e.g., www.example.com), and optional path or parameters.
3. DNS (Domain Name System):
- DNS is a hierarchical decentralized naming system for computers, services, or other resources connected to the internet.
- It translates domain names (e.g., www.example.com) into IP addresses that can be understood by computers.
- DNS plays a crucial role in resolving domain names to their corresponding IP addresses.
4. Hyperlink:
- A hyperlink is a reference or navigation element within a document that allows users to jump directly to a different location.
- It can be text, an image, or any other object that can be clicked or activated to access another resource or webpage.
Conclusion:
Based on the given descriptions, the correct identification for the terms is as follows:
1. Web browser - A software application used to access and view websites on the internet.
2. URL - A web address that specifies the location of a resource on the internet.

The application used to create presentations is MS-PowerPoint.
Explanation:
- MS-PowerPoint is a presentation software developed by Microsoft.
- It is part of the Microsoft Office suite of applications and is commonly used for creating slideshows, presentations, and multimedia presentations.
- MS-PowerPoint allows users to create and edit slides, add text, graphics, charts, and multimedia elements such as audio and video.
- It provides various tools and features to enhance the presentation, such as different slide layouts, themes, animations, and transitions.
- Users can also add speaker notes, rehearse timings, and customize the presentation settings.
- MS-PowerPoint presentations can be saved in different file formats, such as PPT, PPTX, PDF, and others.
- The software is widely used in business, education, and other fields for delivering professional presentations and sharing information.
Summary:
MS-PowerPoint is the application used to create presentations. It offers a wide range of tools and features to create visually appealing and interactive slideshows.

Disciplinary issues come up when a teacher fails to engage students in a meaningful and constructive programme. The nature of students is volatile. They are easily distracted by things. Only a constructive programme could help them gain attention towards the meaningful tasks conducted in the classroom, so that their mind remains occupied to the most productive tasks.

Students feel humiliated being criticised by a teacher in front of their peers. So, handling discipline issues without an audience allows for better, more genuine exchanges, since the student responses will not be witnessed by classmates.

Liking for the profession not only in teaching but any other activity is foremost important to emerge out successfully. A teacher can effectively achieve this only if he has liking for his profession and he puts in all his efforts for the same.

The correct order of bond dissociation enthalpy is

To balance oxidation number, cross-multiply by change in oxidation number

NH₂ has lp of electron which reacts with AlCl₃ or other catalyst that we add to form anilium ion.

Cu (I) undergoes spontaneous disproportionation.

hus, ΔG is negative (spontaneous) for disproportionation.

The correct answer is Option B.
 
5 isomers are possible. C₅H₁₀(C_nH_2n). Molecules having the CnH2n formulas are most likely to be cyclic alkanes. The five isomers are:

(1)   Cyclopentane 
(2) 1-Methylcyclobutane  
(3) 1-Ethylcyclopropane 
(4) 1,1-Dimethylcyclopropane 
(5) 1,2-Dimethylcyclopropane
 

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.

The solubility of Agbr in presence of 10^-7 molar AgNo³ is 3 x 10^-7 M. therefore [Br] 3 x 10^-4 M³, [Ag⁺] = 4 x 10^-4 m³ and [No^3-]= 10^-4 m³

Therefore 

 

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 .

The three elements Potassium, Phosphorus and Nitrogen are the most essential elements without which plants can’t thrive hence C is correct.

 

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

Schools should cater to individual differences to understand why students are able or unable to learn. The objective of education is to provide the fullest possible development for each learner. Education fosters morality, creativity, innovativeness, imaginative power, thinking ability of critical analysis, etc. Everyone has the right to education and every school should be aware of this fact. They should find suitable ways for students to learn better.
Hence, the correct answer is, 'Understand why students are able or unable to learn.'

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 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. 

'Chivalry' is the quality in a man of being highly courteous in his presentation. None of the other options means the same as that of the given phrase.
A preacher is a religious teacher, a savior is a person who protects people in times of need and a knight is a great warrior.
Example-Chivalrous men are difficult to be found in today's world.

The correct option is 1.
The sentence is a question and therefore, must begin with an interrogative tone. The phrase ‘You have been doing’ should be rewritten as ‘Have you been doing’ for the sentence to form a proper question. Hence, the error lies in the first phrase. 

सही उत्तर है - 'झरना - देवता' l
Key Points

• 'निर्झर - निर्जर' शब्द युग्म का सही अर्थ - 'झरना - देवता' l
  • निर्झर - निर्जर यह दोनों 'श्रुतिसम भिन्नार्थक' शब्दों के उदाहरण है l
• निर्झर का अर्थ:- झरना l
• निर्जर का अर्थ:- देवता l
  • अन्य विकल्प 'निर्झर - निर्जर' शब्दों का सही अर्थ ना बताने के कारण गलत उत्तर है l

Additional Information

• ऐसे शब्द जो पढ़ने और सुनने में लगभग एक-से लगते हैं, परंतु अर्थ की दृष्टि से भिन्न्न होते हैं, श्रुतिसम भिन्नार्थक शब्द कहलाते हैं।

श्रुतिसम भिन्नार्थक शब्द के उदाहरण :-

• अलि - भौंरा - फूलों पर बहुत-से अलि मँडरा रहे है।
• अली - सखी - राधा की एक अली का नाम शांता था।
• नीर - पानी - भाषा बहता हुआ नीर होती है।
• नीड़ - घोंसला - रात में पंछी अपने-अपने नीड़ों में विश्राम करते हैं।

दिये गए विकल्पों में से विकल्प 3 'हरि' सही उत्तर है। अन्य विकल्प सही उत्तर नहीं हैं।

Key Points

• सर्प, मेंढक, सिंह, घोडा, वानर, हाथी आदि सभी 'हरि' के अनेकार्थक शब्द हैं।

अन्य विकल्प -

शिव- मंगल, महादेव, वेद, भाग्यशाली

Additional Information

• अनेकार्थक शब्द- ऐसे शब्द, जिनके अनेक अर्थ होते हैं, अनेकार्थी शब्द कहलाते हैं।
• जैसे-

अंबर – आकाश, कपड़ा ·

अदृष्ट – जो देखा न जाए, भाग्य, गुप्त, रहस्य।

सही उत्तर 'अपमान' है।
Key Points

• 'अपमान ' शब्द के अनेकार्थी शब्द - अनादर, उपेक्षा, निरादर।
• 'अपमान' के अन्य अनेकार्थी शब्द - बेइज्जती, अवज्ञा, तिरस्कार, अवमाना।

​ अन्य विकल्प -

1. अभय- निडर, साहसी, निर्भीक, निर्भय, निश्चिन्त।

2. अभियोग- दोषारोपण, कसूर, अपराध, गलती, आक्षेप, आरोप, दोषारोपण, इल्ज़ामा।

3. अनुपम- सुन्दर, अतुल, अपूर्व, अद्वितीय, अनोखा, अप्रतिम, अद्भुत, अनूठा, विलक्षण, विचित्र।

Additional Information