AWES TGT Chemistry Mock Test - 6 - AWES TGT/PGT MCQ

• The National Conference on Water Sufficient Panchayat, Clean & Green Panchayat and Healthy Panchayat will be held in New Delhi.
• It will showcase best practices followed by Panchayati Raj institutions (PRI) and augment capacity building of elected representatives with greater exposure, interactive learning and experience sharing.

The Assessment process should not be boring, or it should be on the basis of only one aspect. The teacher should be careful about using a variety of ways to collect information, about the students learning across scholastic and co-scholastic boundaries. Only scholastic areas should not be focused on assessment. It should also include co-scholastic areas.
Hence, the correct answer is, 'Using a variety of ways to collect information about the students learning across scholastic and co-scholastic boundaries.'

The NRF (National Research Foundation) will be governed, independently of the government, by a rotating Board of Governors consisting of the very best researchers and innovators across fields.

Key Points

•  The goal of the NRF will be to enable a culture of research to permeate through our universities.
• The primary activities of the NRF will be to:
  •  fund competitive, peer-reviewed grant proposals of all types and across all disciplines.
  •  seed, grow and facilitate research at academic institutions.
  • act as a liaison between researchers and relevant branches of government as well as industry; so as to allow breakthroughs to be optimally brought into policy and/or implementation.
  • recognize outstanding research and progress.

Thus, it is concluded that According to NEP‐2020, National Research Foundation (NRF) may be established to enable a culture of research to permeate through universities.

The correct answer is: a.

Both Statement I and Statement II are correct, and Statement II is the correct explanation of Statement I. Cis-1,4-dichlorocyclobutane is indeed optically inactive because it possesses a plane of symmetry. The plane of symmetry allows the molecule to be superimposable on its mirror image, making it achiral and, therefore, optically inactive. So, both statements are correct, and Statement II provides the correct explanation for why the compound is optically inactive.

The correct answer is Option B.
 Lecithin works as an emulsifier which stabilises the emulsion.

We know that white light is composed of many different colours. When white light is allowed to fall on [Ti(H₂O)₆]³⁺ ion, this ion absorbs the light of green and yellow colour and transmits is almost purple colour.The purple colour of the transmitted light is called complimentary colour of that of absorbed light.

• Oxidation Numbers of Halogens: The halogens (Fluorine, Chlorine, Bromine, Iodine, and Astatine) are a group in the periodic table. They are known for their high electronegativity and hence, when they combine with almost all other elements, they tend to have an oxidation number of -1 as they gain one electron to achieve a stable electronic configuration.
• Exception in the case of Oxygen: However, oxygen is more electronegative than all halogens except fluorine. So, when halogens (chlorine, bromine, and iodine) combine with oxygen, they tend to lose electrons to oxygen and hence, they show positive oxidation states.
• Conclusion: Therefore, when chlorine, bromine, and iodine are combined with oxygen, they have an oxidation number of +1 or any positive number (depending on the number of oxygen atoms they are combined with). Hence, the correct answer is C: +1 or any positive number.

Carbon has the highest first ionisation energy because ionisation energy decreases down the group and increases from left to right in a period.

(i) Phosphine Oxide, R₃P=O, presents an important example of the participation of d-atomic orbitals of nonmetallic elements in π bonding. The presence of π bonding is detected with the help of evidence, such as reduction in the bond length, increase in the bond strength, and the stabilization of charge distribution. On these grounds, compared to ammine oxide phosphine oxide presents strong evidence of the presence of dπ - pπ bond, in very high stability of P = O.
(ii) Nitrogen has a unique ability to form Pπ−Pπ multiple bonds with itself and with other elements due to its small size and high electronegativity. 
(iii) N₂O₃ doesn't contain protons, so it is not a Brønsted acid. If N₂O₃ is dissolved in water, you get HNO₂ which is a weak acid, so it is an anhydride of an acid.
(iv) Ca₃N₂: The oxidation state is -3.

Hence, option B is correct.

At 100°C and 1 atmosphere pressure H₂O (l) ⇋ H₂O(g) is at equilibrium. For equilibrium

environmental chemistry basically deals with the interrelationship between chemical species generated by human activities or naturally.

• Colloidal system is a mixture of two substances, one of which, called the dispersed phase (or colloid), is uniformly distributed in a finely divided state through the second substance, called the dispersion medium (or dispersing medium).
• So, here are 2 phases.

Protic solvents solvate carbocation, promotes S_N1 reaction.

Hydrogen has some properties, resembling with IA group elements (alkali metals) and rest resembling with halogens (VII A group elements). Tendency to gain one electron is the property of halogens. Hence, hydrogen resembles with halogens in this respect.

Total number of electrons = 16

Number of bonding electrons = 10, Number of anti-bonding electrons = 6,

Number of atoms = number of moles x N_A x atomicity

= 0.1 x 6.02 x 10²³ x 3

= 1.806 x 10²³

In order for an atom to have a high electron affinity, it needs to be in a position to accept electrons. The alkaline earth metals (like calcium and magnesium) have filled s subshells, so they are stable. If anything, the alkaline earths prefer to lose electrons and exist as cations.

Liquid nitrogen is a cryogenic fluid that can cause rapid freezing on contact with living tissue. 
The temperature is held constant at 77 K by slow boiling of the liquid, resulting in the evolution of nitrogen gas.

Both elements are present in the same substance . Such reaction is called intramolecular redox reaction.

 The two sulfur atoms of thiosulfate exist in the oxidation state of sulfate (+6) and sulfide (−2) and do not change their respective oxidation states upon disproportionation.  

So difference in the oxidation states of two types of sulphur atoms will be

= (+6)- (-2) 

= +8

A carbon atom has four valence electrons. The number of valence electrons of any atom of an element can be determined by the period table group in which the element is classified. There are a total of 18 groups on the period table group.

The correct answer is option B

UF₆ is used in enrichment of uranium for nuclear power plant.

Gadolinium (Gd) have [Xe] 4f⁷5d¹6s² configuration.

pH = 8.7 ⇒ pOH = 5.3
Basic Buffer

If volume of salt = V ml

(i) Orbital angular momentum L = 
L depends on the value of l (azimuthal quantum number)
(ii) To describe wave function (), n, I and m are needed, if, it obeys Pauli's exclusion principle, then s is also needed.
(iii) Value of n, I and m are needed to determine size, shape and orientation.
(iv) Probability density (²) is based on n, I and m