AWES TGT Chemistry Mock Test - 4 - AWES TGT/PGT MCQ

SURYA KIRAN's 17th edition is being held in Pithoragarh, Uttarakhand, emphasizing the enduring collaboration between India and Nepal in military cooperation.

NEP 2020 recommends a multilingual approach, where students are taught in their mother tongue/local language plus one other language.

‘Choice of challenge’ is a characteristic of motivation.

Motivation is the drive to achieve something in life that satisfies one’s needs. There are two primary types of motivation namely, intrinsic motivation and extrinsic motivation. A number of behavioural characteristics are indicators of high motivation. Here are some of the important factors and some ways to help a child develop these characteristics:

• Persistence is the ability to stay with a task for a reasonably long period of time. While very young children cannot concentrate on one activity for an hour, there are still measurable differences in the length of time that young children will engage in an activity. A highly motivated child will stay involved for a long period of time, whereas an unmotivated child will give up very easily when not instantly successful.  Children learn persistence when they are successful at a challenging task.
• Choice of challenge is another characteristic of motivation. Children who experience success in meeting one challenge will become motivated, welcoming another. These motivated learners will choose an activity that is slightly difficult for them but provides an appropriate challenge. Unmotivated children (those who have not experienced early success) will pick something that is very easy and ensures instant success.
• The amount of dependency on adults is another indicator of motivation. Children with strong intrinsic motivation do not need an adult constantly watching and helping with activities. Children who have a lower level of motivation or are extrinsically motivated need constant attention from adults and cannot function independently.
• The last indicator of motivational level is emotion. Children who are clearly motivated will have a positive display of emotion. They are satisfied with their work and show more enjoyment in the activity. Children without appropriate motivation will appear quiet, sullen and bored.

National Education Policy 2020  is the first education policy of the 21st century and aims to address the many growing developmental imperatives of our country.

• This Policy proposes the revision and revamping of all aspects of the education structure, including its regulation and governance, to create a new system that is aligned with the aspirational goals of the 21st century.

Key Points

• National Education Policy 2020 proposes that children in primary grades should be taught in their Mother tongue/Home language. 
• This policy promotes multilingualism as multilingual education stresses using a student's mother tongue, or native language, to teach students and to make learning effective. 
• Classrooms that use multilingual education use various strategies to help students learn in their native languages. 
• Multilingualism enhances creativity, divergent thinking, and appreciation of local languages.

​Hence, we can conclude that at the primary level, National Education Policy 2020 proposes Mother tongue/Home language as the medium of instruction across the nation.

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. 

This is 1-phenyl propan-1-one.

The correct answer is option D

The variability of oxidation state, a characteristic of transition element arises due to incomplete filling of d-orbitals.

The correct answer is Option A.
 
Glucose gets oxidized to cyanohydrin in reaction with HCN . This indicates that the carbonyl group is present as an aldehydic group.

The correct answer is Option B.
An emulsion is a colloid of two or more immiscible liquids where one liquid contains a dispersion of the other liquids. 
Examples: Oil and water mixtures are emulsions when shaken together. The oil will form drops and disperse throughout the water. So, curd is not an emulsion.
 
Foam is a substance where air or gas bubbles are trapped inside a solid or liquid. 
Examples: Styrofoam, whipped cream, soap bubbles. So, mist is not a foam.
 
An aerosol is a colloid of fine solid particles or liquid droplets in air or another gas. Aerosols can be natural or not. An Example of natural aerosol is fog. Examples of artificial aerosols are dust, particulates, air pollutants and smoke.
 
Solid sol is a type of colloid of the form of one solid dispersed in another continuous solid. So, cake is not solid sol.

Option A: Group 5A (or VA) of the periodic table are the pnictogens:  the nonmetals nitrogen (N), and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metal bismuth (Bi).
Option B: The electron gain enthalpy of P< N< S< O.
Option C: Minimum and maximum oxidation number of phosphorus are -3 and +5 respectively.
Option D: Fluorapatite is a phosphate mineral with the formula Ca₅(PO₄)₃F .

Hence, option A is correct.

Down the group Z_eff decrease & complex farmation tendeny decrease

Anti – histamines stop allergic reactions by competing with histamine for binding sites of histamine receptor.

Since, ΔG ° < 0, hence it is spontaneous in forward direction . Oxidation number of Xe decreases hence, it is an oxidising agent and oxidation number of F increases, hence it is a reducing agent.

Lactose: The sugar found naturally in milk, it is a disaccharide composed of one galactose unit and one glucose unit; sometimes called milk sugar.

Stoichiometric compounds of hydrogen are formed with s-block elements. Only Group I elements form stoichiometric hydrides with Hydrogen as same as halides.

Because of the small size of boron atom and presence of only six electrons in its valence shell, B(OH)₃ accepts a pair of electrons from OH^- ion of H₂0, releasing a proton. 

Cis-trans Isomers:- It is under the class of geometric isomer,

• It exists in alkenes (organic molecules which have double bonds). 
• When two similar or higher priority groups are attached to the carbon on the same side, it is termed as cis isomer and when it is attached to the opposite side it is called a trans isomer.

EAN = 28 (Z) – 2 (oxidation number) + 2*4 (CN) = 34

Hence A

The correct answer is Option A.
Aromatic Primary amine will form the most stable diazonium salt because it releases water when it reacts with nitronium ions. If aliphatic primary amine reacts with nitrosonium ion it Also releases water but in this case water reacts with alkyl diazonium salt and it forms alcohol while benzene diazonium salt does not react with water at this temperature.

For isobaric process, we have ∆S =nC_pln(T₂/T₁)
T2 = 273+127 = 400K and T₁ = 273+227 = 300K
Applying pV = nRT at initial condition,
1×10 = n×0.0821×300
n = 0.40
Applying ∆S =nC_pln(T₂/T₁)
∆S =0.40×5/2R×ln(400/300) = 2.38 JK^-1

It is a simple Tischenko reaction

RNO₂ +Fe/HCl ->RNH₂

The Russian scientist Dmitri Mendeleev proposed a periodic table similar to the one we use today in 1869. He arranged the elements according to "periodic law", where element properties could be predicted based on recurring similarities between elements (periodicity).

Unnilquadium is a combination of un, nil, and quad i.e. 1, 0 and 4 as per IUPAC nomenclature. Its symbol is formed by joining the first letters. So combining u from uni, n from nil and q from quad, we get Unq.

The correct answer is option A
(I) ^xPO₄³⁻​ ⇒ x + 4 × (−2) = −3
                ⇒x = −3 + 8 = +5
                ⇒x = +5
Oxidation number of P = +5
(II) ^xSO₄²⁻​ ⇒ x + 4 × (−2) = −2
                ⇒x = −2 + 8
                  ⇒x = +6
Oxidation number of S=+6
(III) ^xCr₂​O₇²⁻ ​    ⇒2x + 7 × (−2) = −2
                        ⇒2x =−2+14
                        ⇒2x=12
                        ⇒x= 12/2​ = +6

[H⁺] = 10^–2
pH = 2.

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.