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

The correct answer is The Supreme Court.

Key Points 

• The Supreme Court of India is called the custodian of the Constitution in India.
• The highest court in India, the Supreme Court is considered as the guardian of the Constitution.
• The conflicts or quarrels of jurisdiction between the central government and the state governments or between the legislature and the executive are decided by the court.
• It upholds and uplifts the rule of law and also ensures and protects citizens’ rights and liberties as given in the Constitution.
• Therefore, the Supreme Court is also known as the Guardian of the Constitution.​

Additional Information 

• The Indian constitution provides for a provision of the Supreme Court under Part V (The Union) and Chapter 6 (The Union Judiciary).
• The Supreme Court of India is the highest judicial court and the final court of appeal under the Constitution of India, the highest constitutional court, with the power of judicial review.
• India is a federal state and has a single and unified judicial system with a three-tier structure, i.e. Supreme Court, High Courts, and Subordinate Courts.

Given:

Length of rectangle = 3/5 of radius of circle

Radius of circle = Side of square with area 6400 m2

Breadth of rectangle = 15 m 

Formulas used:

Area of square = (Side)²

Perimeter of rectangle = 2(Length + Breadth) 

Calculation:

Area of square = 6400 m2

⇒ Side² = 6400 

⇒ Side = √6400 = 80 m 

Radius of cirlce = Side of square = 80 m 

⇒ Length of rectangle = 3/5 × 80 = 48 m 

∴ Perimeter of the rectangle = 2(48 + 15) m 

⇒ 126 m 

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.

Alkaline earth metal nitrates are prepared in solution and can be crystallized as hydrated salt by the action of HNO₃ on oxides ,hydroxides and carbonates.

MO + 2 HNO₃ ——> M(NO₃)₂ + H₂O

M(OH)₂ + 2 HNO₃ ———> M(NO₃)₂ + 2 H₂O

MCO₃ + 2 HNO₃ ———> M(NO₃)₂ + H₂O + CO₂ 

Tendency to form hydrates decreases with increasing size and decreasing hydration enthalpy down the group.

All nitrates are soluble in water and decompose on heating to give the corresponding oxides with evolution of NO₂ and O₂.

Strontium and barium nitrate are used in pyrotechnics for giving red and green flames.

Non metallic oxides are acidic.

The correct answer is Option C.
The random movement of microscopic particles suspended in a liquid or gas, caused by collisions between these particles and the molecules of the liquid or gas in free space is called Brownian movement.

Oxalate is a bidentate ligand.

In hydrated salt, there are five types of water. The five types of water in hydrated salt are i. coordinated water, ii. hydrogen bonded water, iii. lattice water, iv. clathrate water and v. zeolite water.

Bond length and (EN) oppose each other, with the larger halogens having longer bonds but weaker (EN). Thus CH₃CI > CH₃F > CH₃Br.

The potential energy of an electron in the first Bohr’s orbit in the H-atom is

This energy is defined as an atomic unit of energy called HARTREE.

In 1913, Henry Moseley showed that the atomic number of an element is a more fundamental property than its atomic mass.

On addition of H₂/Pd/CaCO₃
we get H-CH=C-CH₂-CH₂-CH₃ 
H-CH=C-CH₂-CH₂-CH₃ + NBS/CCl₄   →   H-CH=C-CHCl-CH₂-CH₃  (NBS adds Br to carbon at next alternate to double bond)
H-CH=C-CHCl-CH₂-CH₃ + KOH/EtOH  →  H₂C=C-CH=CH-CH₃
(by E₂ elimination)

On substituting the values of conc. of NO, O₂ and NO₂ in given rate equation, we get a +ve (positive) value indicating that the reaction takes place in forward direction.

A small and highly electronegativity elements form a stronger hydrogen bond. The order of size of N , O and F is F < O < N .and so the order of strength of hydrogen bond is F > O > N.

Hence, electronegativity of F is the highest, therefore magnitude of positive charge on hydrogen and negative charge on F is the highest in HF and Hence, electrostatic attraction of H bonding is the strongest in HF.

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.

The rows of the periodic table are called periods, while the columns of the table are called groups.

As we move down the group metallic character increases so Bi is a metal thus its oxide is basic.

P₄ has six P-P single bonds and four lone pair of electrons.
Ratio: 6/4 = 3/2 i.e. 3:2

Catalyst only increases or decreases the activation energy of a reaction, It doesnot get used up in reaction.

The correct answer is option C
The order of reaction with respect to A = 1
The order of reaction with respect to B =1
Total order of reaction = 1+1 = 2

Mn²⁺/ Mn have - 1.18SRPvalue.

The correct answer is Option B.
 
Molal elevation constant is a characteristic constant for a given solvent. It is the elevation of boiling point produced when one mole of solute is dissolved in 1 kg of solvent. The proportionality constant, Kb, is called the molal boiling point elevation constant. It is a constant that is equal to the change in the boiling point for a 1-molal solution of a nonvolatile molecular solute.

As the temperature increases, so does the rate of reaction. But very high temperatures denature enzymes.The enzyme activity gradually increases with temperature up to around 37^oC, or body temperature.

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.

CN^- → CNO^-
4+ x = -1      4+ x-2 = -1
∴ x = -5    ∴ x = -3   
Oxidation number increases. This is oxidation.

CN^- → CNO^- + 2e^-

Hydration energy ∞ polarising power
Na⁺ < Mg²⁺ < Mg³⁺ < Be³⁺ < Al³⁺

The correct answer is option D
For Na₂​SO₄ ​: −i = n
Na₂​SO₄ ​⟶ 2Na⁺ + SO₄²⁻​​
                         n=2
i=1−α+nα
i=1−α+2α
i=1+2α