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

The correct answer is ​Palwal.

• Mahatma Gandhi was arrested on April 10, 1919, when he was going to Punjab against the Rowlatt Act.

Key Points

• Palwal Railway station is 29 km from Faridabad.
• This was the place where Mahatma Gandhi was arrested for the first time.
• In his remembrance, a building called ‘Gandhi Ashram’ is made.
• Palwal is the 21st district of Haryana and Palwal city is the headquarters of this district.

Additional Information

• Palwal got its name from a demon ‘Pulwasur’ who ruled this place during the time of Pandavas.
• He was killed by Balram, the elder brother of Shri Krishna.
• In memory of this incident ‘, the Baldev chat ka Mela festival is organized every year.

The correct answer is Kandud.

Key Points

• The old name of the Mahendragarh district of Haryana was Kanaud.
• The previous name was derived from the Kanaudia group of Brahmins.
• During the middle of the nineteenth century, it came to be known as Mahendragarh.

Additional Information

• In 1861, ruler Maharaja Narendra Singh of Patiala principality named this fort in Mahendergarh in honor of his son Mohinder Singh.
• This District has 3 Subdivisions: Narnaul, Mahendragarh, and Kanina.
• Narnaul city is the administrative headquarters of the district and also the largest city in the district.
• Mahendragarh district is divided into 5 tehsils, Narnaul, Nangal Chowdhary, Kanina Mahendragarh, and Ateli.

1) 8, 4, 3, 7, 1, 5, 2, 6

2) 5, 2, 7, 3, 4, 1, 8, 6

3) 3, 1, 6, 8, 4, 5, 2, 7

4) 1, 4, 8, 3, 2, 5, 7, 6

'POLITICS' is a meaningful English word.

Hence, '1, 4, 8, 3, 2, 5, 7, 6' is the correct answer.

All exams must be conducted for the backward children. Emphasis must be paid on providing proper education to them so that they can easily face all examinations.

Emotional intelligence is a type of ability to manage and understand a person's emotions. People who possess a high degree of emotional intelligence are aware of what they are feeling. People who possess a low degree of emotional intelligence remain confused about their emotions. Empathising is associated with emotional intelligence. It is the ability to understand the feelings of another person.
Hence, the correct answer is, 'Empathising.'

Answer: (b) The order of SN₂ reaction of the alkyl halide is RI > RBr > RCl > RF.

Explanation: Iodine is a good nucleophile and a good leaving group. Thus, it eliminates easily from an alkyl halide favouring SN₂ elimination reaction

Thermal stability ∝ bond dissociation energy 
(where, E = group 16 elements)
On moving down the group, bond dissociation energy decreases due to increase in bond length. Thus, the order of bond dissociation energy or thermal stability is 
H₂O > H₂S > H₂Se > H₂Te > H₂PO

A complex compound in which the oxidation number of metal is zero is [Ni(CO)_4​]. In this complex, the oxidation number of both metal and ligand is zero.

The oxidation number of metal in the complexes K₄​[Fe(CN)₆​], K₃​[Fe(CN)₆​] and [Pt(NH₃)₄]Cl₂ are +2, +3 and +2 respectively.

Although CH₃O^- is weaker base than (CH₃)₃CO^- , former is stronger nucleophile due to smaller size.

= 946 + 249 - 607 - 418 = 1195 - 1025 = 170 kJ mo^l-1 
Resonance energy = Observed heat of formation – calculated heat of formation 
= 82 -170 = 88 kJ mol^-1

The substance which forms the colloidal solution in water is starch. A colloidal solution is a solution in which the colloid mixes uniformly. All colloids have a Tyndall Effect, which is not exhibited by glucose. Starch is a colloid and thus when mixed with water can form the colloidal solution.

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.

Volume decreased

i.e p increased

no.of moles reactant more

Na₂[Fe(CN)₅NO] is Sodium nitroprusside.

It is pseudo first order reaction.

I₂ gets reduce to I⁻ while  H₂O₂ get oxidize to O₂

(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.

The correct answer is option A
2.03x 10^-4
The given equation is :-
 N2​(g)+3H2​(g) ⇌ 2NH_3​(g)
Initial moles : 1             3         0
At eqm ;       (1−x)    (3−3x)   (2x)               
(let)
Total moles of equation
 =1 − x + 3 − 3x + 2x = (4−2x)
Now, X(NH_3​) = 
⇒ 2x = 2 − x
⇒ 3x = 2 ⇒ x = 0.66 = 
32​
Now, at equation, moles of N₂​= 1/3, moles of NH_3​ = 4/3
             moles of H2 ​ =3 − 2 = 1

 

F, O and N are electronegative elements. Thus, HF molecules are associated by intermolecules H-bonding giving it a liquid state and thus highest boiling point out of HF, HCl.HBr and HI.
Similarly, H₂O has highest boiling point, and NH₃ has highest boiling point.

Tert butyl chloride will have mass in decimals (since Cl is its constituent and it has fractional mass), so it will not be considered. In Iso hexane there are 5 different positions, so we can’t get one single monosubstituted alkyl halide.
In neo-hexane, we have 3 different positions for mono substitution, so we can’t get one single monosubstituted alkyl halide.
However in neopentane, we have a single position for substitution. So we can get one single monosubstituted alkyl halide.

We have ∆G = ∆H - T∆S
For spontaneous reaction ∆G<0 and vice versa,
∆G at 80° C:-
3213 - (80+273)8.73 = 141.9 kJ mol-1
As it comes positive, the conversion of rhombic and monoclinic is non- spontaneous at 80° C.In other words, rhombic is more stable than monoclinic at this temperature.
∆G at 110° C:-
3213 - (110+273)8.73 = -119.1 kJ mol-1
As it comes positive, the conversion of rhombic and monoclinic is spontaneous at 110° C.In other words, rhombic is less stable than monoclinic at this temperature.

Rate constant is also known as velocity constant.

∆H_r is called both enthalpy of combustion of hydrogen as well as enthalpy of formation of water.For the enthalpy of combustion of hydrogen, the reason is that 1 mole of Hydrogen is burnt in its pure state. For the formation of water, the reason is that 1 mole of water is formed from its constituent elements.