EMRS PGT Chemistry Mock Test - 1 - EMRS MCQ

The correct answer is Red.

Key Points

• Sulphuric acid is also known as the oil of vitriol.
• It is composed of sulfur, hydrogen, and oxygen element.
• The acid has a very strong acidic nature.
• It has several uses such as fertilizer manufacture, mineral processing, oil refining, and wastewater processing.
• It is also known by the name hydrogen sulfate.

Important Points

• The litmus solution is a purple dye solution.
• It is extracted from the plant called " Lichen".
• It is used as an acid-base indicator.

The pattern followed here is;

15 is the wrong term that doesn't follow the pattern here.

There should be 12.5 in place of 15.

Hence, "15" is the correct answer.

1) 8, 4, 3, 7, 1, 5, 2, 6

2) 5, 2, 7, 3, 4, 1, 8, 6

3) 3, 1, 6, 8, 4, 5, 2, 7

4) 1, 4, 8, 3, 2, 5, 7, 6

'POLITICS' is a meaningful English word.

Hence, '1, 4, 8, 3, 2, 5, 7, 6' is the correct answer.

184381483287848568784186

There are four such 8's which are followed by even number and preceded by an odd number.

Given:

(a + b) : (b + c) : (c + a) = 6 : 7 : 8

a + b + c = 14

Calculaiton:

(a + b) = 6k

(b + c) = 7k

(c + a) = 8k

⇒ 2(a + b + c) = 21k

⇒ 21k = 2 × 14

⇒ 21k = 28

⇒ k = 4/3

⇒ c + a = 8 × 4/3

⇒ c + a = 32/3

As given,

⇒ b + 32/3 = 14

⇒ 3b + 32 = 42

⇒ 3b = 10

∴ b = 10/3

According to question,
A's weight is twice as much as of B.
1. A = 2B.
B's weight is four and half times as much as of C.
2. B = 4.5C
C's weight is half times as much as of D.
3. C = D/2.
D's weight is half as much as of E.
4. D = E/2.
E weight is less than A but more than C.
5. A > E > C
from 1 and 2
6. A = 2B = 9C
from 6 and 3
7. A = 2B = 9C = 4.5D
from 7 and 4
8. A = 2B = 9C = 4.5D = 2.25E
so from 8 and 5
A > B > E > D > C
Descending order of weights of the articles will be
A, B, E, D, C

In the figure the simplest Triangles are GLK, DLJ, DJM,HMN,QRE,IRA,IPA, and FPO is the 8 triangle

and another is BDO,CDQ,DLM, PRA, KFI, NEI, HJI, GJI,DKI, and DNI is the 10 triangle

and another is DIE, DFI, DOA, DQA, and GHI is the 5 triangle

and DCA, DBA is the 2 triangle and DEF and ABC so that according to the figure the total no. of triangle is
8 + 10 + 5 + 2 + 1 + 1
= 27

The correct answer is Ctrl + V.

Key Points

• Shortcut commands save time because it eliminates the need of using the mouse or tracker. 
• Ctrl + V  is the shortcut key to paste content to the clipboard.

Additional Information 

• Shortcuts in MS Word-
   

The correct answer is Special keys​.

Key Points

• A keyboard key that moves the cursor (pointer) around the screen.
• The four arrow keys, as well as the PageUp, PageDown, Home, and End keys, are among them. Keys for navigating.
• These keys are used to navigate documents and webpages, as well as to modify text.
• The arrow keys, Home, End, Page Up, Page Down, and Insert are among them.
• To close the current open program or window, simultaneously press the Ctrl and F4 keys on the keyboard.
• Users can also simultaneously press the Alt and spacebar keys, then arrow down to the Close or Exit option in the menu and click Enter.

Important Points

• A special key, sometimes known as a media key or multimedia key, is a keyboard key that performs a function not available on a standard 104-key keyboard.
• A function key is a type of soft key that can be programmed on a computer or terminal keyboard to cause an operating system command interpreter or application software to do specified activities.

The correct answer is Desktop.

Key Points

• The desktop is the main screen area that you see after you turn on your computer and log on to Windows.
• Like the top of an actual desk, it serves as a surface for your work.
• When you open programs or folders, they appear on the desktop.
• The desktop is the primary user interface of a computer.
• It includes the desktop background (or wallpaper) and icons of files and folders you may have saved to the desktop.
• In Windows, the desktop includes a taskbar, which is located at the bottom of the screen by default.

Additional Information

• The Start menu is a graphical user interface element used in Microsoft Windows since Windows 95 and in some other operating systems.  
• A file manager or file browser is a computer program that provides a user interface to manage files and folders. 
• An operating system is system software that manages computer hardware, software resources, and provides common services for computer programs.

The greatest cause of failure of a new teacher is in the area of interpersonal relations. If the teacher is not able to develop a bond or relationship with the students, she will be rejected by the students and will face a lot of hardships.

Age of learner is proportional to the cognitive ability of the learner, thus teaching aids should be selected on the basis of the age. Use of any kind of teaching aid can only be helpful in serving the purpose, if it runs parallel to the cognitive ability of the learner.
The use of teaching aids facilitates the objective of teaching by assisting teachers in differentiating instruction. Hence, they must be chosen keeping in view what the teacher intends to teach the students.
The teaching aids also must be carefully chosen to match the intellectual level of the students. In case of students with intellectual disabilities, different kind of teaching aids are to be used, instead of those used for normal intellectual abilities.

The stage of the embryo which nearly resembles a human being is called a fetus. Learning starts at fetal stage when a child starts reacting to different stimuli, as the sense organs are developed by this time.
The fetal nervous system starts developing very early in pregnancy. The main subdivisions of the brain are, in a basic form, visible at five gestational weeks. At about gestational weeks 25-29, the fetus is even able to hear internal (e.g. from the maternal gastrointestinal system) and external sounds. So, obviously the fetus gets a vague idea from the external environment through its senses, far before birth. Some studies even demonstrate that fetal heart rate patterns change distinctively, depending on whether the unborn child is exposed to the maternal voice or another female voice.

The correct answer is Option D.
Electrophoresis movement of colloidal particles towards an electrode, when they are subjected to an electrical field.

In preference to reduction of Zn²⁺ at cathode, O^2- (aq) is oxidised to O₂ at anode.

It has network Structure.

∆x*∆mv=h/4π

E1 Reactions involve carbocation intermediates which has characteristics of rearrangement into more stable carbocation, hence involves more than one transition states (usually).

This is known as shielding effect. Inner lying electrons shields the positive charge reaching the outer most electrons.

Depression in freezing point is a colligative property but freezing point is not a colligative property.

Explanation: The atom which defines the structure of a family of organic compounds and their properties is called a functional group. Functional groups are specific groups of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules.

various oxides of sulphur, nitrogen, carbon, halogens causes Tropospheric pollution

Cl show different oxidation state as -1 to +7 due to vacant d orbital.

As oxygen is more electronegative than Cl.

Oxygen size is small hence its more electronegative and show -2 oxidation states.

2x + 7 (-2) = 0

x = +7

The triarchic theory of intelligence is also called the three forms of intelligence. Based on this theory, research on human intelligence take a more cognitive approach. 
Sternberg explained only three types of intelligence: Componential or analytical sub theory, Experiential or creative sub theory, and Contextual or practical sub theory. 
Hence, the correct answer is, 'Social.'

Slander is to work on lines so as to defame the character and image of a person. Thus, defame is the nearest synonym to slander.   
Example- During elections, there is a fest of defamation between politicians.

सही उत्तर है - ‘व्यष्टि’।

• समष्टि का विलोम व्यष्टि होगा।
• समष्टि का अर्थ : सामूहिकता।
• व्यष्टि का अर्थ : समष्टि का सदस्य या व्यक्ति।

Key Pointsअन्य विकल्प:

• अस्ति का विलोम : नास्ति।
• विशिष्ट का विलोम : साधारण।
• अशिष्ट का विलोम : शिष्ट।

Additional Information

• किसी शब्द का विलोम शब्द उस शब्द के अर्थ से उल्टा या विपरीत अर्थ वाला होता है।

विलोम शब्द के उदाहरण:-

• कृतज्ञ - कृतघ्न
• तुच्छ - महान्
• प्रगतिशील - प्रतिगामी
• देव - दानव