AWES TGT Chemistry Mock Test - 3 - AWES TGT/PGT MCQ

IIT Madras hosts the 6th Shaastra Rapid FIDE Rated Chess Tournament from March 30 to 31, 2024, in Chennai. It’s the sole IIT in India to conduct an annual Open Rapid Rating Tournament. Over 35 players from IIT Madras join, alongside international players from countries like Australia, England, America, and Singapore. Notable participants include six grandmasters, sixteen International Masters, three female grandmasters, and a Woman International Master.

The Indian Space Research Organisation (ISRO) is set to launch the European Space Agency's (ESA) Solar Study Mission Proba-3, highlighting ISRO's role as a key player in international space collaborations and missions.

Visual Impairment: The term 'visual impairment' is used to refer to not only those who are blind but also those who have their own vision. When the person has residual vision above a certain level, he is said to have low vision or poor vision. However, if the residual vision is below that level, he is considered to be blind.

Important Points

In a classroom situation, the total number of blind students should be 10-12, so that teacher can adopt the strategies which cater individual differences in the class.

Strategies to teach blind students in the classroom:

• Teachers who teach blind children in ordinary classrooms need to provide adequate special materials and equipment. There is almost universal agreement that the special materials and equipment needed by a visually impaired student in a regular school are essential to success.
• In addition, Friendly user materials are good teaching materials for blind children, and creative materials which are provided to blind children enhance dialogue and social interaction to complete an assignment. 
• Students with visual impairments who's knowledge of concepts are strong would have difficulty keeping pace with this rate of instruction unless it is entirely verbal.
• Purposeful sampling was used to select teachers who teach blind children in ordinary classrooms. Legibility for teacher’s participation in the study was based on the following criteria:
  • experience in teaching blind children with their distance vision assessment results indicating that they are blind with (visual acuity of (3/60 or worse).
  • Teaching ordinary classrooms,
  • fully attending school at the time of the study, and
  • gender balance was desirable but not necessary.
• The teacher who is guiding the blind children in ordinary classrooms is supposed to know more than the blind pupils who are being guided, that is why very many blind children have fallen victims to wrong teaching. Guidance is needed for blind children since they can hear, it is easy for them to learn.

Hence, we can conclude that in a classroom situation, the total number of blind students should be 10-12.

The sounds th, ph, ch are phonemes. The phoneme is the unit of sound.  A phoneme combines with other phonemes to give rise to meaningful words. Phonemes distinguish one word from another. These are established by the use of minimal pairs, such as pat vs bat or tap vs tab.
Hence, the correct answer is, 'Phonemes.'

NEP 2020 advocates for the use of technology as a supplement to traditional teaching methods to enhance learning experiences.

This task is known as paragraph dictation.

Teachers can facilitate children's understanding of complex concepts by providing opportunities for exploration and discussion.

In the triarchic theory, three types of intelligence proposed by Robert Sternberg are: Analytical, Creative and Practical.

Ionisation energy increases along a period. The very next elements C,N,O,F results F with higher ionisation energy.

Dehydration of alcohol to alkene in presence of concentrated H₂SO₄ involves the –OH group in the alcohol that donates two electrons to H⁺ from the acid reagent, forming an alkyloxonium ion. The deprotonated acid (the nucleophile) then attacks the hydrogen adjacent to the carbocation and form a double bond.

Thus, the initiation step is protonation of alcohol.

The correct option is C.

On moving down a group since the number of valence electrons remains the same, all elements exhibit same valence.

Hydrogen peroxide, represented by H₂O₂, is stored in acetanilide or sodium pyrophosphate, the presence of traces of alcohol, which slows down the rate of decomposition of hydrogen peroxide (H₂O₂).

double bond single bond character character

• Mendeleev arranged the elements in order of their atomic masses while taking chemical properties into consideration.
• He left gaps predicting that some elements will be discovered later.
• When inert gases were discovered, they could be placed in a new group without disturbing his existing table.

Since statement A states that groups 7 and 8 were arranged on the basis of equivalent weights, it stands incorrect. 

If FeCl₃ is added to excess of hot water, a positively charged sol of hydrated ferric oxide is formed due to adsorption of Fe³⁺ ions.
Ferric hydroxide is a negative sol,FeCl₃ electrolyte will coagulate the most.

Br-atom has configuration

To get pentavalency, two of the p-orbitals are unpaired and electrons are shifted to 4d-orbitals. 

In this excited state, sp³d²-hybridisation occurs giving octahedral structure. Five positions are occupied by F atoms forming sigma bonds with hybrid bonds and one position occupied by lone pair, i.e., the molecule as a square pyramidal shape. 

 

The correct answer is Option B.

Xe has an electronic configuration of 5s²5p⁶
In XeF², there are two bonding pairs and three lone pairs of electrons. So acc. to VSEPR theory, the structure would be trigonal bipyramidal to avoid electron pair repulsions.(sp³d)
In XeF₄, the structure would be square planar. There are four pairs of bonding electrons and two lone pairs in the molecule. The hybridisation would be sp³d²
XeOF₄ has an octahedral geometry due to sp³d² hybridization. One trans position is occupied by a lone pair giving pyramid shape to the molecule.
Thus  XeF₂ has sp³d hybridization.

• There are a total of 7 periods in the periodic table.
• The sixth period of the periodic table contains 32 elements.
• It is beginning with cesium and ends with radon.
• Lead (Pb) is currently the last stable element whereas all subsequent elements are radioactive.

Hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. The three major groups are covalent, ionic, and metallic hydrides. Formally, hydride is known as the negative ion of a hydrogen, H-, also called a hydride ion.

The correct answer is option C
1,4-Dimethylcyclohexane consists of two diastereomeric stereoisomers, although, according to the n2 rule, four stereoisomers should be expected due to the fact that 1,4-dimethylcyclohexane contains two asymmetric carbons.

Precipitation of AgCl is an example of instantaneous reaction.

Evident from Fajan rule

The correct answer is Option B.
The optically active hydrocarbon X is 3-methyl-1-pentene CH₂=CH−CH(CH₃)CH₂CH_3​. On catalytic hydrogenation, it forms 3-methyl pentane CH₃CH₂CH(CH₃)CH₂CH₃, which is optically inactive.

We know that Fluorine has a charge of -1 which then means 'A' has to have a charge of +3. I got that from the AF₃. If Iodine is substituted for Fluorine, the answer should be B. AI₃ because Iodine also has a charge of -1. Although the actual answer should be 2AI₃ because Iodine is also a diatomic element which would give us the reaction 2A+ 3I₂ >>> 2AI₃.

The correct answer is option A
The colligative properties of a solution are
Proportional to the number of solute particles present.
In chemistry, colligative properties are those properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present.

(a) 2s (b) 2 p (c) 3d (d) 3d
Thus, (c) and (d), both 3d, have equal energy.

∆S = nCplnT₂/T₁ + nRlnP₁/P₂
Since pressure is constant, so the second term will be zero.
Or ∆S = 3×7/2×8.314×2.303×log(1000/400)
= 80.42 JK^-1

Be and Al compounds are largely covalent because of high charge density leading to high polarizing power of the cations.