NVS PGT Chemistry Mock Test - 2 - NVS TGT/PGT MCQ

• The Constituent Assembly met for the first time in New Delhi on 9 December, 1946 in the Constitution Hall which is now known as the Central Hall of Parliament House.
• The Constituent Assembly took almost three years (two years, eleven months and seventeen days to be precise) to complete its historic task of drafting the Constitution for Independent India.
• The Assembly met once again on 24 January, 1950, when the members appended their signatures to the Constitution of India.

Key-Points​

• The Constituent Assembly held its first meeting on December 9, 1946.
• The Muslim League boycotted the meeting and insisted on a separate state of Pakistan.
• The meeting was thus attended by only 211 members.
• Dr Sachchidanand Sinha, the oldest member, was elected as the temporary President of the Assembly, following the French practice.
• Later, Dr Rajendra Prasad was elected as the President of the Assembly

Hence, the data is inadequate.

The word that can be suffixed to form new words is ‘ure’

Fail + ure = Failure

Press + ure = Pressure

Depart + ure = Departure

Advent + ure = Adventure

The correct answer is Taskbar.

Key Points

• Date and Time' located in taskbar in Windows 10 operating system. 
• Right-click on the Taskbar and select “Properties”.
• On the “Taskbar” tab, uncheck the option “Use small taskbar buttons”.
• Click on “Apply” and then “OK”.
• Now check if that displays the date with the time on the notification area.
• 

Additional Information

• My Documents
  • It is the commonly recognized name of a special folder in Microsoft Windows.
  • This folder is supposed to be a personal area where users store their personal non-shared documents. 
• Taskbar
  • The default settings for the taskbar in Microsoft Windows place it at the bottom of the screen and includes from left to right the Start menu button, Quick Launch bar, taskbar buttons, and notification area.
• Recycle Bin 
  • It acts as a holding bay for deleted items, such as files and folders (and even shortcuts!). When you delete a file or folder, it is not deleted from your computer permanently.
  • Instead, Windows 7 places the deleted items into the Recycle Bin.
• My Computer
  • It gives us an overview of different types of drives present in the computer.
  • My Computer folder is a gateway to all the data stored on the computer, attached devices, and the network as well as a shortcut to most of your system information.

The correct answer is Recycle bin.

• Recycle Bin is a location where deleted files or folders are temporarily stored in every version of Microsoft Windows since Windows 95.
• The Recycle Bin allows users to recover files that were deleted in Windows.
• In Apple computers, the Trash application is used to store deleted files like Recycle Bin.
• You can hold down the Shift when deleting a file to prevent it from going to the Recycle Bin.

Additional Information

The correct answer is option 3 i.e ​Win Zip.

• WinZip is a compressor tool for Windows, macOS, iOS, and Android.
• WinZip allows users to compress files and to open compressed files in .zip format.
• WinZip helps to compress and send large files, across the network.
• Developed by WinZip Computing.
• First released in 1991.
• Phillip Walter Katz is known as the co-creator of the Zip file format for data compression.

Animals solve problems by understanding – like human beings, instead of going through either the trial and error process or stimulus response association. In this case, learning took place by insight. Learning by insight involves finding a solution to the problem by thinking over the problem and understanding the various aspects of the problematic situation.
Insight learning refers to the sudden realisation of the solution of any problem without repeated trials or continuous practices. To further elaborate on its definition, insight learning is the type of learning in which one draws on previous experience and also seems to involve a new way of perceiving logical and cause-and-effect relationship.

Madam Soni found that most of the students this year performed better in exams than the last year. This is because she improved the teaching methods, and thus, the students were able to understand better. This better understanding resulted in the improved performance of the students.

Fluorine is most electronegative element therefore can only gain electrons. Thus it only shows negative oxidation state.

There are several ways to tell metals and nonmetals apart. Nonmetalsdon't have a metallic appearance. Unlike metals, they typically have lower melting and boiling points and tend not to conduct heat or electricity very well.

Option b: Decrease concentration of sample four times and measure the optical rotation. Explanation:

• Optical rotation is directly proportional to concentration (specific rotation = observed rotation/concentration).
• If you decrease the concentration of the chiral compound in the sample, the observed optical rotation will decrease proportionally.
• If the initial observed rotation is indeed +60° and not -300°, decreasing the concentration will still result in a positive rotation, but it will be lower.

The other options are less likely to provide useful information in this context.

½ H₂(g) + ½ Cl₂(g) → HCl(g) ∆_fH° = -22.10 kcal mol^-1  -----(I)
HCl(g) + H₂O(l) → H⁺(aq) + Cl^-(aq)     ∆_solutionH° = -17.9 kcal mol^-1 -----(II)
Let us add (I) and (II), we get
½ H₂(g) + ½ Cl₂(g) → H⁺(aq) + Cl-(aq) ∆_rH° = -40.0 kcal mol^-1
∆_rH° = ∑∆H_product  -  ∑∆H_reactant = ∆_fH_Cl- (since enthalpy of formation of H, H₂ and Cl₂ are 0)
∆_fH_Cl- = -40.0

The option (d) represents incorrect statement. It states that 
"Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value".
The correct statement is "Removal of electron from orbitals bearing lower n value is difficult than from orbital having higher n value".
The attraction between the nucleus and the electron present in orbital having lower n value is higher than the attraction between the nucleus and the electron present in orbital having higher n value.

1 and 2 are non-superimposable mirror images of each other. So, according to the options given, 1 and 2 are enantiomers of each other.

• Phenol is C₆​H5​(OH) while benzyl alcohol is C₆H₅​(CH₂​OH). 
• Here there is a difference of −HC2​ between their molecular formula.
• According to the definition of homologous series, the adjacent members of the series differ by −CH₂​ group.
• Thus Phenol and benzyl alcohol are homologous of each other.

54 gram of water is formed or three moles of water is formed.
C₂H₆ + (7/2)O2 → 2CO₂ + 3H₂O
So it indicates that only one mole of C₂H₆ is used in the combustion so the heat released is itself the value of heat of combustion of Ethane.

Reactivity of Alkyl Halide for Wurtz Rxn
R - I > R - Br > R - Cl > R - F

The bond pair of electrons is shared by two atoms whereas the lone pair of electrons is only under the influence of central atom.

So the electron cloud of lone pair occupies more space as compared to the bond pair.

This causes greater repulsion between the lone pairs as compared to lone pair-bond pair and bond pair-bond pair interactions.

Epoxide undergo nucleophilic attack of NH₃ at less substituted α-carbon giving anti hydroxy amine.

Be²⁺ →  Al³⁺ + Be²⁺ is diagonaly similar with Al³⁺ & Al³⁺ is amphoteric in nature.

Water has a high boiling point because of the presence of extensive hydrogen bonding interactions between the water molecules in the liquid phase (water is both a strong hydrogen bond donor and acceptor). When heat is first applied to water, it must break the intermolecular hydrogen bonds within the sample.

Mn²⁺/ Mn have - 1.18SRPvalue.

Salt formed : NH₄Cl = 0.1 N
Solution will be slightly acidic due to Hydrolysis

National Education Policy (July 29, 2020) was finalized after reviewing the suggestions Kasturirangan committee, its vision is to develop a Bharat-centric knowledge society. A society that has its roots in eternal Bhartiya Sanskriti and looking forward to moving with the world. 

Key Points The NEP 2020 stipulated that the three-language formula would be maintained while keeping in mind the Constitution, the aspirations of the people, regions, and the Union, and the necessity to encourage multilingualism as well as national unity.

• It stipulates that the three-language formula would be more flexible, that no language will be imposed on any state, and that one of its key priorities will be the promotion of regional languages.
• In light of the foregoing, the Rajasthan State Council of Educational Research and Training (RSCERT) developed a new curriculum that includes three languages: Hindi, English, and the local dialect/ languages.
• The central government recognizes 18 dialects from the state of Rajasthan, hence the state government has the authority to choose any of these 18 dialects in different regions.

Thus, it can be inferred that as per the NEP 2020, the Rajasthan government has decided to come up with a new syllabus that includes 3 languages, which are Hindi, English, and local languages.

NEP 2020 is the third education system in the history of independent India after the policy of 1968 and the second policy of 1986.

• It is an ambitious and futuristic policy that ensures opportunities for children to hone their talents by fixing the lacunae in the education system.

Key Points 

• According to NEP 2020, Vocational education is perceived to be inferior to mainstream education and meant largely for students who are unable to cope with the latter. 
• In NEP-2020, small number of students receives vocational education because:
  • the opportunity in vocational courses becomes restricted that results in the lack of vertical mobility.
  • Vocational education, in the past, focused largely on Grades 11-12 and on dropouts in Grade 8 and upwards.
  • Students passing out from Grades 11-12 with vocational subjects often did not have well-defined pathways to continue with their chosen vocation.

Hence, it could be concluded that all of the above is correct in the context of the question.

The correct answer is Option 2, i.e., ‘spare’.
The word ‘castigate’ means ‘to subject to severe punishment.’ The word ‘spare’ has an opposite meaning of ‘to choose not to punish.’ Hence, the correct option is Option 2.

"News" is always used in the singular form. Hence, it requires a singular supporting verb.
Correct Sentence- No news of firing along the border has been heard of.