HPSC PGT Chemistry Mock Test - 1 - HPSC TGT/PGT MCQ

The correct answer is sheep and goat.

Key Points

• The earliest domesticated animals were sheep and goats.
• Domestication is the process by which people grow plants and look after animals.
• All the animals which we use today as food are the result of domestication.
• It started about 12,000 years ago.

 Thus, we can say that the earliest domesticated animals include sheep and goats.

Additional Information

•  The earliest domesticated plants were wheat and barley.

The correct answer is Abul Fazl.

Key Points

• Abul Fazl called the Brahma Sarovar of Haryana a miniature sea.
• Braham Sarovar, as the name suggests, is associated with Lord Brahma.
  • Taking a dip in the holy water of Sarovar during Solar Eclipse is considered equal to the merits of performing thousands of Asvamedha Yajnas.
  • Having seen its huge water body, Abul-Fazl during solar eclipse has described the vast water body of this Sarovar as a miniature Sea.

Additional Information

• Abul Fazl was a political advisor and high-ranked official in the Akbar administration.
  • He helped Akbar with the framing of the vision of governance with Sulh-i-kul.
  • It was about peaceful and harmonious relationships among the different religions in his administration.
• He also wrote a three-volume history of Akbar’s reign, titled Akbar Nama.
  • The first volume deals with Akbar’s ancestry.
  • The second volume recorded events from Akbar’s reign.
  • The third volume is the Ain-i Akbari. It deals with Akbar’s administration, including rich statistics on crop diversity, wages, revenue, prices.

In education process aim, content and methods are evaluated.

Evaluation is concerned with assessing the effectiveness of teaching, teaching strategies, methods and techniques. It provides feedback to the teachers about their teaching and the learners about their learning.

The teacher must provide ask a few more questions on the same topic, so that the student arrives at the exact correct answer. The student thus would be left with a lasting impression and hence will not forget it for long time.

Atomic no 24 is of Cr. Due to half filled orbital stability it doesnot follow Afbau rule so its configuration is 

The correct answer is Option A. 

Valency of an element is defined as its tendency to accept valence electrons.
Since noble gas has completely filled valence (outer) shells, they have the least reactivity.
Hence noble gases are already stable in its elemental form. So its valency is zero.
 

When we go down in a group shell increase and size increase and due to large size of atom electron can easily be removed. Thats option is C.

(d) CsCI has bcc structure.
Closest dista nce between Cs⁺ and Cl^- is the sum of radii of Cs⁺ and CI^- = 169 + 181 = 350 pm

Cubic diagonal = √3 a

Closest distance is one-half of the cubic diagonal

Amphiprotic : can accept and Release H⁺
Only H₂PO^–₄ & HCO^–₃

−NO₂ group is reduced to –NH₂ using H₂/Pd.

 2-bromomethyl-2-methyl-1-butanol: The bromine substitution occurs at the carbon bonded to oxygen but not at a chiral carbon. Thus option b satisfies the condition.

Sum of number of neutrons and protons represents mass number. Tritium has 1 proton and 2 neutrons. 

(d)

The given compound is the result of Hofmann Exhaustive Methylation reaction.
According to Hofmann Rule the less substituted alkene is the major product.


Hence CH₂ = CH₂ will be the major product with

The correct answer is Option D.
 

(C—H) bond lengths are different from (B—H) and (N—H) bond lengths. Both are planar.

Acidic strength of carboxylic acid -

–  More acidic than phenols or alcohols.

–  Acidity increase with the presence of a group with  -I effect in the alkyl group.Whereas it decreases with the presence of  +I group.

–  Acidity increases with increase in the number of halogen atoms on  - position.

–  It decreases with increasing distance of halogen from   

–  It increases with increase in the electronegativity of halogen.

- CF₃COOH > CCl₃COOH > HCOOH > CH₃ COOH

Si,P,C,N

Electronegativity increases along a period and decreases down the group.Nitrogen is expected to have maximum electronegativity.

Maximum oxidation number of Cl = + 7

Thus, species with + 7 oxidation number can be reduced but not oxidised.

∆H_{neutralisation} =  ∆H_H⁺ _{+ OH}- + ∆_rHionisation 
-5.1 = -57.3 + ∆H_ionisation
∆H_ionisation = 52.2 kJ mol^-1

It has network Structure.

Soda ash is Na₂CO₃.

various oxides of sulphur, nitrogen, carbon, halogens causes Tropospheric pollution

Molecularity is defined as the number of molecules, atoms, or radicals that must collide simultaneously in order for the reaction to take place. It is always a natural number and cannot be negative.

Because isotones means the same number of neutron, So, from the question, option c is right, number of neutron in k is,39-19= 20,and,the number of neutron in ca is also 40-20=20 so it is isotones.