Bihar STET Paper 2 Chemistry Mock Test - 3 - Bihar PGT/TGT/PRT MCQ

as oxygen is more electronegative than Cl,Br and I. So they have positive oxidation state.

At anode 2Cl^- —-±>Cl₂+2e^-
At cathode 2Na⁺ +2e^- ——-> 2Na.
So 2 Faraday of electricity is required to liberate 1 mole = 22.4 liters of Cl₂ at STP.
Amount of current passed
= 30 x 60 x 60=108000 coulombs.
So 108000 coulombs will liberate =108000/(96500 x2) = 0.5596 moles Cl₂.
No.of liters of Chlorine liberated at STP
= 0.5596 x 22.4 = 12.53 liters.

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

• This yellow colour is due to metal excess defect of anionic valency.
• Na+ion deposited on the surface of crystal of NaCl . The Cl-ion diffused to form NaCl. This happens by loss of electron from Na to Na+.
• The released electro diffused into the crystal and occupy anionic site called F center which imparts yellow colour to NaCl.

n = 6, l = 2 means 6d → will have 5 orbitals. 

∴ max 10 electrons can be accommodate as each orbital can have maximum of 2 electrons. 

The angular momentum (mvr) of electron in nth orbit is equal to nh/2π
For the electron in 5th orbit

This is an example of E1 reaction and more substituted alkene (I) is formed as the major product.

Correct Answer :- D

• Lewis bases need to be able to donate electrons. Fluorine is the most electronegative element in the halogens followed by chlorine, bromine and iodine. 
• Due to fluorine being strongly electronegative, it draws the electron density towards itself which makes it difficult for nitrogen atom to donate its lone pair of electrons. So, NF is the least basic. This trend follows the strength of electronegativity of the halides. 
• Since iodine is least electronegative, it is the most basic trihalide of nitrogen.

So, we have the trend, in decreasing order of basic strength:

NF₃ < NCl₃ < NBr₃ < NI₃

∆p×∆x = h/4π
Or ∆v = h/4π∆xm      (since p = mv)
=6.6×10^-34Js/4×3.14×25×10^-3kg ×10^-5 
by solving this your answer is 2.1×10^-28

In electro chemical series (ECS),

thus, Ca²⁺ ion is not reduced to C a instead, H₂O is reduce d to H₂. 

Ag, Cu and Cr are below H in ECS (E°_reduction > 0), thus they are reduced to metals on electrolysis.

Note In ECS, Ca, H, Cr, Cu elements lying above H are better reducing agents thus are easily oxidised.

Ka = 1.8 × 10^–5
CH₃COO^– + H₂O  CH₃COOH + OH^-
Given reaction is reverse of above

The correct answer is option D
The IUPAC name for the given compound is:
3-Bromo-4-(hepta-2,4,6-trienyl)cyclopenta-2,4-dien-1-oll
according to the rule of nearly attached halogen count first.so we count the the chain where bromo is near
 

Precipitation of AgCl is an example of instantaneous reaction.

Glucose solution is one molal. Thus, 1000 g water (solvent) has glucose = one mole = 180 g

Total mass of solution = 1000 +180 = 1180 g

1180 g of solution has glucose = 180 g 

∴ 1000 g of solution has glucose =
180 x 1000/1180 = 152.5 ≈ 153g  

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.

Number of chiral centers = 2

The correct answer is Option B.
 
The molar mass of benzene is 78 g
 
The molar mass of toluene is 92 g
 
n_Ben = 78/78 =1

n_Tol = 92/46 = 0⋅5

X_Ben = 1 / 1+0⋅5

        = 1⋅5

P_Ben = X_BenP⁰_Ben
             = (1/1⋅5) × 75
            =​  50

Primary valency is equal to no. of ligands attachted which are negatively charges.

Ford-block elements, group number is equal to the number of electrons in (n - 1)d subshell + number of electrons in valence shell (nth shell).

 (d) Aqueous 6% methanol solution by mass means 100 g of aqueous solution has = 6g CH₃OH

'If you are given 100 rupees, what will you do?' The objective of asking this type of question is to give place to child's experience and thinking. The child will think how he can use 100 rupees judiciously and take into account his previous experience in doing so. Through the use of 100 rupees the priorities of the child will reflect which he/she gained from the past experiences. There can be a child who believes more in saving the money or there may be some who prefer spending. Hence the thinking of the child can reflect.

A lively classroom is the one having frequent student-teacher discussions. This is the two-way teaching method.

The response of a young child on the basis of the past situation is related to the 'Law of Analogy' of learning. 
The 'Law of Analogy' principle was developed by Edward Thorndike. According to him, an individual makes use of old experiences while learning a new situation. The way young child did he identified the similarities between the past situation and the present one.
Hence, the correct answer is, 'Law of Analogy' of learning.

Excessive strictness is a negative trait that can lead to resistance in students. The teacher must strive to create an atmosphere where the students can learn without fearing of being ridiculed or belittled. They need an environment which is safe to learn by their mistakes.

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.'

Inclusive Education means education for all children in school as It refers to the inclusion of all children in the education system, regardless of their differences and disabilities.

• It values the diversity, each child brings to the classroom and facilitates all with equal opportunities to learn and grow.
• Inclusive education improves the quality and making provisions of education for all. >Inclusive education welcomes and celebrates diversity.
• It provides a provision to include disabled children along with normal children in a regular classroom environment.
• It refers to an education system that accommodates all children regardless of their physical, intellectual, social, emotional, linguistic, or other conditions.

Key Points

Basic Principles of Inclusive Education:

• Equity and equal opportunities for all.
• Well constructed educational plan.
• Use of multilingualism as a resource.
• Use of specific pedagogical strategies.
• Sensitization towards individual differences.

Important Points

Institutional initiative for inclusive education can be evidenced when :

• Time is provided for teams of teachers and paraprofessionals to plan together
• A differentiated curriculum is designed
• School provides students to explore different co-curricular activities as per their interests.

Additional Information

• Entry-level tests to enroll students should not be supported according to NCF
• School should have differentiated material for all students
• Instead of common assessments, assessments as per the need of learners should be conducted.

Hence, we can say that institutional initiative for inclusive education can be evidenced when time is provided for teams of teachers and paraprofessionals to plan together.

This task is known as paragraph dictation.

Manganese is one of the important raw materials used for smelting iron ore.

Important Points

• Manganese is used for making alloys.
• It is used in manufacturing of enamel, dry cell batteries, plastics, chemicals and glasses.
• It requires almost 10 kg of manganese to manufacture one tonne of steel.
• Odisha is the largest producer of manganese in India with multiple mines located over the iron ore belt of India.
• Some of the major mines are Bonai, Kendujhar, Sundergarh, Gangpur, Koraput, Kalahandi, and Bolanger.
• After Odisha, Karnataka, Maharashtra, Telangana, Goa, and Jharkhand lies in the list of manganese producer in India.
• In 2000-2001, Odisha produced one-third of the country's total production.

Thus, we can conclude that Odisha is the largest producer of manganese.

IIT Bombay is ranked 45th globally in engineering according to the QS World University Rankings 2024, highlighting its excellence in the field and its leading position in South Asia.

The logic followed is:

middle number = sum of the bottom number - top number

In fig 1:

10 = (7 + 9) - 6

10 = 16 - 6

10 = 10

In fig 2:

10 = (5 + 8) - 3

10 = 13 - 3

10 = 10

Similarly,

? = (9 + 6) - 4

? = 15 - 4

? = 11 

Hence, the correct answer is "11".