HPSC PGT Chemistry Mock Test - 8 Free Online Test 2026

The correct answer is Ethanol + Methanol​.

• Ethanol + Methanol​ is denatured alcohol.
• Denatured alcohol is ethanol that has additives to make it poisonous, bad-tasting, foul-smelling, or nauseating to discourage its recreational consumption.
• The term denatured alcohol refers to alcohol products adulterated with toxic and/or bad tasting additives (e.g., methanol, benzene, pyridine, castor oil, gasoline, isopropyl alcohol, and acetone), making it unsuitable for human consumption.
• The most common additive used is methanol (5–10%), giving rise to the term methylated spirits. Denatured alcohol is used as a lower-cost solvent or fuel for home-scale or industrial use.

Key Points

• Denatured alcohol is ethanol or grain alcohol that contains additional chemicals called denaturants that make it unfit for human consumption.
• Denatured alcohol is fine for some types of lab work and as an ingredient in certain products, but it's not safe to drink.
• Ethanol is an organic chemical compound. It is simple alcohol with the chemical formula C₂H₆O.
• Its formula can be also written as CH₃−CH₂−OH or C₂H₅OH and is often abbreviated as EtOH.

Additional Information

• Alcohol (ethanol or ethyl alcohol) is the ingredient found in beer, wine, and spirits that causes drunkenness.
• Alcohol is formed when yeast ferments (breaks down without oxygen) the sugars in different food. 

The correct answer is Acharya Devvrat.

Key Points

• Mahabir Prasad was the 11th Governor of Haryana.
• Jaisukh Lal Hathi was the 4th Governor of Haryana.
• Babu Parmanand was the 12th Governor of Haryana.
• Acharya Devvrat is a Governor of Gujarat.

Additional Information

• Condition for the office of the governor:
  • He should be an Indian Citizen.
  • He should be 35 years old or more.
  • He should not hold any office of profit.
  • He cannot be a member of parliament or state legislature.
• Article Related to Governor:
  • Article 152: Definition
  • Article 153: Governors of states.
  • Article 154: Executive Power of Governor.
  • Article 155: Appointment of Governor
  • Article 156: Term of office of Governor
  • Article 157: Qualifications for that appointment of Governor
  • Article 158: Conditions of Governor's office.
  • Article 159: Oath or Affirmation by Governor
  • Article 160: Discharge Of the functions of the Governor in Contingencies
  • Article 161: Power of Governor to grant pardon, etc.
  • Article 162: Extent of Executive Power of State.

The logic followed here is:

1) Intact and Unflawed are synonyms meaning not damaged and perfect.

2) Entire and Partial are antonyms.

3) Bright and Luminous are synonyms.

4) Pure and Perfect are synonyms.

Both the words are synonyms in all the options except option 2, where the given words are antonyms.

Hence, the correct answer is "Entire : Partial".

The pattern followed is:

Top right number = multiplication of top left number and bottom number 

In fig 1:

729 = 81 × 9

729 = 729

In fig 2:

512 = 64 × 8

512 = 512

Similarly,

In fig 3:

? = 49 × 7

? = 343 

Hence, the correct answer is "343".

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A diamond is not considered a molecule because each carbon atom is covalently bonded with four other carbon atoms. This is what makes a diamond a network solid.

Additional Information: 

• A network solid or covalent network solid (also called atomic crystalline solids) is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material. 
• Examples of network solids include diamond with a continuous network of carbon atoms and silicon dioxide or quartz with a continuous three-dimensional network of SiO₂ units.

The correct answer is option  D.
Milk is an emulsion with fat particles (globules) dispersed in an aqueous (watery) environment. The fat globules do not coalesce and form a separate layer (oil off or churn) because they are protected by a membrane layer which keeps the fat particles separate from the water phase.

(a.c.d) Regardlessvehether a cell is a volatic or an electrolysis cell, anode s the electrode at which oxidation takes place and cathode is the electrode at which reduction takes place. In electrochemical cell, Zn → Zn²⁺ + 2e^- .

It is losing electrons thus, anode is negative terminal. In electrolysis cell. cation migrates to cathode thus -ye terminal. anion migrates to anode thus +ve terminal. 

The correct answer is option C
Homogeneous catalysts are those which exist in the same phase (gas or liquid ) as the reactants, while heterogeneous catalysts are not in the same phase as the reactants. Typically, heterogeneous catalysis involves the use of solid catalysts placed in a liquid reaction mixture.

[Co(CO)₄]
EAN = 27 –(0)+ 4 × 2 = 35
2[Co(CO)₄] → Co₂(CO)₈

EAN = 27 + 1 + 4 ×2 = 36

Electron –rich hydrides, as the name suggest, are compounds of hydrogen with other elements that have excess electrons present as lone-pairs. For example ammonia –NH₃ is a hydride of nitrogen that has one lone pair, water (H₂O) is a hydride of oxygen that has two lone pairs etc.

= 2.53/106   2.59 × 10^-2  5.9 × 10^-2
0.238 × 0.25          = 1.18 × 10^-3

250 ml - 0.238

= 0.955

0.955  0.955 

H₂O₂ is an oxidizing agent in 1st reaction and Reducing agent in 2nd reaction.

We know that K_p depends only on Temperature. As the temp. remains constant , K_p also remains constant.
α depends on the concentration of the reactant
So as the volume of the reaction container is halved, α also changes
So option d is correct.

Valence of representative element is usually equal to the number of valence electrons and/or equal to eight minus the number of valence electrons.

NaHCO₃ + H₂SO₄ →  Na₂SO₄ + H₂O + CO₂
extingusher fire

Dobereiner's Triads were groups of three elements with similar chemical properties, where the atomic mass of the middle element was approximately equal to the average of the other two. Carbon, being a nonmetal with a unique set of properties, did not fit into any known triad.

Ozone is detected by using Hg.

Option ‘a’ represents metallic character of Mg. All others remaining represent nonmetals and metalloids.

Group 15 doping on group 14 element forms n type semiconductor due to excess electrons.

As per IUPAC nomenclature, the roots are as follows: 0 – nil, 1 – un, 2 – bi, 3 – tri, 4 – quad, 5 – pent, 6 – hex, 7 – sept, 8 – oct and 9 – enn. So the roots for 1, 1 and 9 are un, un, and enn. Hence the symbol of the elements is Uue.

Reducing power of Zn increases as :
alcohol < H₂O < H₂O / H⁺

30% of hydrogen peroxide is called Perhydrol, which is used as an antiseptic and germicide for washing wounds, teeth, and ears. The volume strength of Perhydrol is hundred and its molarity is given by 8.8

The complex [CO(NH₃)₅NO₂]CI₂  produces three ions in aqueous solution.

[Co(NH₃)₅NO₂]CI₂ → [Co(NH₃)₅NO₂]⁺ + 2Cl^-
The aqueous solution on treatment with an excess of AgNO₃ gives two moles of AgCI because we have 2 moles of Cl^- ion in aqueous solution.
Linkage isomers

[Co(NH₃)₅NO₂]CI₂ and [Co(NH₃)₅(ONO)]CI₂
The nitrite ligand is bound through oxygen (—ONO)in red form. The nitrite ligand is bound through nitrogen (—NO₂) in yellow form.

Asymmetric = 2³ = 8

(c)

Nearest neighbours are along the diagonal at the half distance apart, Diagonal AB = √3a

∴ Distance of the nearest neighbour

Next nearest neighbours are along the cell edge = 520 pm

K-atom at the centre is surrounded by eight K-atoms as nearest neighbours.

In bcc, coordination number is six as next nearest neighbours

In Calgon’s method sodium hexametaphosphate is used to remove hardness of water

Both XeF₂ & CO₂ have linear structures. Both are actually linear Tri-atomic molecules.