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

The correct answer is Six.

Key Points

​Therefore, The United Nation have Six organ body. 

Important Points

• ​The United Nations is an intergovernmental organization.
• The stated purposes are to maintain international peace and security, develop friendly relations among nations, and achieve international cooperation.
• The United Nations (UN) main organs are— the General Assembly, the Security Council, the Economic and Social Council, the Trusteeship Council and the Secretariat, and the International Court of Justice.
  • Founded: 24 October 1945
  • Headquarters: New York, New York, United States
  • Secretary general: António Guterres

The correct answer is Hardeep Doon.

Key Points

• Haryana has got its first Traffic ADGP.
• IPS officer Hardeep Doon has been given the responsibility of this.

Additional Information

• On behalf of Home Minister Anil Vij, he has been asked to comprehensively improve the traffic system of the state.
• Also asked to make 15 permanent traffic rules on the lines of Delhi, for which the dateline of 31st December was fixed.
• Rajesh Jogpal -
  • He has been appointed as the standard chairman of Modern Pythian Games Haryana.
• Women's World Hockey Goalkeeper of the Year Savita Poonia has been selected.
• Santosh Yadav -
  • He was made the chief guest at the Vijayadashami festival by the RRS.​ 

The correct answer is Shot put.

Key Points

• Deepa Malik
  • She was born on 30 September 1970 in Bhaiswal, Haryana.
  • She started her career at the age of 30.
  • She is the first Indian woman to win a medal in Paralympic Games and won a Silver medal at the 2016 Summer Paralympics in the shot put. Hence, Option 1 is correct.
  • She has also won gold in the F-53/54 Javelin event at the para athletic Grand Prix held in Dubai in 2018. 
  • She is currently the world number one in the F-53 category. 
  • She is a member of the working group in the formulation 12th five-year plan (2012–2017) on sports and physical education.
  • She was honoured with the Arjuna award in 2012, at the age of 42 years.
  • She has also been conferred the prestigious Padma Shri award in 2017.
  • She has won 58 national & 23 International medals across all disciplines to date.

The correct answer is Neeraj Chopra.

• Neeraj Chopra and Mirabai Chanu were among the notable winners of the 2022 Sportstar Aces Awards.

Key Points

• Sportstar of the year (Female)- Mirabai Chanu (Manipur).
• Club of the year award- Mumbai city FC.
• National team of the Year- Indian Men's Hockey team.
• Best state for the promotion of the year- Haryana.
• Prarathlete of the year- Avani Lekhara.

Important Points

Given:

Mohit got 30% marks and failed by 25 marks

Another student scored 38% and

He got 15 more marks than passing marks

Calculation:

According to the question

⇒ 30% + 25 = 38% – 15

⇒ (38% – 30%) = (15 + 25)

⇒ 8% = 40

⇒ 1% = 5 marks

Now,

5% = 25 marks 

Then,

The necessary pass percentage required = (30% + 5%)

⇒ 35%

∴ Required pass percentage is 35%

The total distance = 15 + 20 + 30 + 15 = 80m

Hence, the correct answer is 80m.

NEP 2020 aims to achieve a Gross Enrollment Ratio (GER) of 50% in higher education by 2035.

2CO + O2 ------------> 2CO₂
Atomic wt of C =12 kg or gms, Atomic wt of O = 16 kg or gms
2(12 + 16) kg of CO + 32 kg of O2 -----------> 2(12+32) kg of CO₂
56 kg of CO + 32 kg of O₂ -------> 88 kg of CO₂
For, 1kg of CO + 32/56 kg of O₂ ---------> 88/56 kg of CO₂
Therefore, 1kg of CO requires 32/56 or 4/7 kg of oxygen to produce 88/56kg or 11/7 kg of CO2

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

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.

Ligand which can ligate through two different atoms is called ambidentate ligand. NO₂^- ion can coordinate either through nitrogen or through oxygen to a central metal atom/ion.

Hence, ligand show linkage isomerism, e.g. the complex [Co(NH₃)₅(NO₂)]CI₂ which is obtained as the red form, in which the nitrite ligand is bound through oxygen (—ONO) and as the yellow form, in which the nitrite ligand is bound through nitrogen (— NO₂). 

The maximum covalency is total no. of  unpaired electron in ground state or in excited state which can be used for bond formation.

(a) Intermolecular H-bonding, boiling point increases with molecular weight for compounds within the same family.
(b) H-bonding is absent is CH₃CH₂CH₃.
(c) Methanol is the larger molecule but H₂O has more H-bonding because of two O—H bonds.
Thus, boiling point of H₂O(ll) > CH₃OH(l).
(d) Molecular weight of butanol is much higher and overcomes attractive forces of butanol.

• 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. 

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

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

• 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. 

 

Unleaded paint and petrol were introduced because lead affect the brain and cause mental impairment

Ksp = S²
⇒ 6.4 × 10^–5 = S²
⇒ S = 8 × 10^–3 mole/L
S = 8 × 10^–3 × 10³ mole/m³
⇒ S = 8 mole/m³

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.

Tertiary halide would be most reactive in S_N1 reaction.

The metallic character of group 14 elements increases from top to bottom because removal of electron becomes easier on moving down the group. Metallic character increases as you move down an element group in the periodic table. This is because electrons become easier to lose as the atomic radius increases, where there is less attraction between the nucleus and the valence electrons because of the increased distance between them.