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UP PGT Chemistry Mock Test - 5 - UPTET MCQ


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30 Questions MCQ Test UP PGT Mock Test Series 2024 - UP PGT Chemistry Mock Test - 5

UP PGT Chemistry Mock Test - 5 for UPTET 2024 is part of UP PGT Mock Test Series 2024 preparation. The UP PGT Chemistry Mock Test - 5 questions and answers have been prepared according to the UPTET exam syllabus.The UP PGT Chemistry Mock Test - 5 MCQs are made for UPTET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for UP PGT Chemistry Mock Test - 5 below.
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UP PGT Chemistry Mock Test - 5 - Question 1

A fresh precipitate can be transformed into colloidal sol by:

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 1

The dispersion of a freshly precipitated material into colloidal solution by the action of an electrolyte in solution is termed peptization. The electrolyte used is called a peptizing agent. For Example, sols obtained by peptization are: Freshly prepared ferric hydroxide on treatment with a small amount of ferric chloride solution at once forms a dark reddish brown solution. Ferric chloride acts as a peptizing agent.

UP PGT Chemistry Mock Test - 5 - Question 2

Ortho – sulphobenzimide is

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 2

Sodium saccharin (benzoic sulfimide) is an artificial sweetener with effectively no food energy. It is about 300–400 times as sweet as sucrose but has a bitter or metallic aftertaste, especially at high concentrations. Saccharin is used to sweeten products such as drinks, candies, cookies, and medicines.

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UP PGT Chemistry Mock Test - 5 - Question 3

At 675 K, H2(g) and CO2(g) react to form CO(g) and H2O(g), Kp for the reaction is 0.16. If a mixture of 0.25 mole of H2(g) and 0.25 mol of CO2 is heated at 675 K, mole% of CO(g) in equilibrium mixture is :

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 3





UP PGT Chemistry Mock Test - 5 - Question 4

The total number of tetrahedral voids in the face-centred unit cell is

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 4

(b) Unit cell of fee is divided into eight small cubes. Each cube has four atoms at alternate positions. When joined to each other, they make a regular tetrahedron.
Thus, number of tetrahedral void in small cube = 1 and in eight cubes, voids = 8.

Note  If number of atoms in a cube = N, then, number of octahedral voids = N and number of tetrahedral voids = 2N

UP PGT Chemistry Mock Test - 5 - Question 5

A broad spectrum antibiotic is:

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 5
  • The range of bacteria or other microorganisms that are affected by a certain antibiotic is expressed as its spectrum of action.
  • Antibiotics that kill or inhibit a wide range of Gram-positive and Gram-negative bacteria are said to be broad-spectrum antibiotics.
  • Chloramphenicol,Vancomycin and ofloxacin are important broad-spectrum antibiotics.
UP PGT Chemistry Mock Test - 5 - Question 6

Butylated – Hydroxy Toluene is added in packed foods to preserve fats because

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 6

Butylated hydroxy toluene (BHT) is used as an antioxidant. It retards the action of oxygen on the food material and thereby helps in preventing oxidative rancidity of fats.It itself get oxidized and prevent the food.

UP PGT Chemistry Mock Test - 5 - Question 7

Which transition metal oxide has appearance and conductivity like that of copper?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 7

Rhenium oxide and cooper oxide have same appearance and conductivity.

UP PGT Chemistry Mock Test - 5 - Question 8

Which is the most suitable reagent for the following transformation?

 

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 8

Wolff-Kishner reduction is suitable for reduction of carbonyls containing olefinic bonds. If Clemmensen reduction is done, HCI also attacks olefinic bonds.

UP PGT Chemistry Mock Test - 5 - Question 9

Which one of the following is a water soluble vitamin?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 9

The correct answer is Option C
Fat soluble vitamin - A, D, E, K
Water soluble vitamin - Vitamin B complex and C
So, vitamin B is water soluble.
Vitamins which can dissolve in water are called water-soluble vitamins. Water-soluble vitamins include vitamin-C and vitamin-B because they remove the toxins from our body through urine. Therefore, they are not stored in our body and should be taken on a daily basis through the food we eat.

UP PGT Chemistry Mock Test - 5 - Question 10

How many distinct alkene products are possible when the alkyl iodide given below undergoes E2 elimination?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 10


UP PGT Chemistry Mock Test - 5 - Question 11

According to Dobereiner’s law of triads the number of elements present in each group is:

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 11
  • According to Dobereiner's law of triads each triad contains three elements.
  • He also noticed that the middle element of each of the triads had an atomic weight about halfway between the atomic weights of the other two.

UP PGT Chemistry Mock Test - 5 - Question 12

The Aufbau principle states : In the ground state of the atoms, the orbitals are filled in order of

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 12

According to Aufbau rule electrons are filled in increasing order of energy.

UP PGT Chemistry Mock Test - 5 - Question 13

Which of the following statement is incorrect ?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 13

The correct order of bond dissociation enthalpy is

UP PGT Chemistry Mock Test - 5 - Question 14

What is the most efficient method to get water with zero degrees hardness?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 14

Permutit is hydrated sodium aluminum silicate, it exchanges it’s sodium ions for divalent ions of calcium and magnesium, permutit when fully exhausted can be regenerated by treating with 10% of sodium chloride solution. It is the most efficient method to get water with zero degrees of hardness.

UP PGT Chemistry Mock Test - 5 - Question 15

An electron in H-atom in its ground state absorbs 1.5 times as much as energy as the minimum required for its escape from the atom

Q.

Thus, kinetic energy given to the emitted electron is

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 15

E1 = Energy of H-atom in the ground state = 13.6 eV 

Energy absorbed = (13.6 x 1.5) = 20.4 eV
E2 = Energy of the excited state
= 13.6+ 20.4= 34.0 eV
ΔE = KE = (E2 - E1)
= 34.0 - 13.6 = 20.4 eV

UP PGT Chemistry Mock Test - 5 - Question 16

Bones and teeth contains:

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 16
  • Teeth are composed of calcium, phosphorus, and other minerals. 
  • Bones contain calcium, phosphorus, sodium and other minerals, but mostly consist of the protein collagen.

Additional Information: The hardest part of the human body, teeth mostly consist of a calcified tissue called dentin. The tooth's dentine tissue is covered in enamel, that hard, shiny layer that you brush.

UP PGT Chemistry Mock Test - 5 - Question 17

Which of these compounds is a basic oxide?​

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 17

A basic oxide is one which dissolves in water gives a base. MgO when dissolved in water gives Mg(OH)2 which is a base and others give acids

UP PGT Chemistry Mock Test - 5 - Question 18

Calculate the cell EMF in mV for

Pt|H2(1atm) |HCl(0.01M)|AgCl(s)| Ag(s)        at 298 K

 If ΔG°r values are at 25°C

  for AgCl(s) and  for H+ + Cl-) (aq)

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 18

UP PGT Chemistry Mock Test - 5 - Question 19

2, 3-dimethyl butaneWhich of the following anion will be migrates towards anode to prepare 2, 3-dimethyl butane in the given reaction.

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 19

UP PGT Chemistry Mock Test - 5 - Question 20

An ion M2+, forms the complexes [M(H2O)6]2+, [M(en)3]2+ and [MBr6]4-, match the complex with the appropriate colour.

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 20

Δo value is directly proportional to energy and inversely related to the wavelength. Also, more the ligand is a strong field ligand More will be the value of Δo and lower will be its wavelength. Among the given complexes the strength of ligands are Br− < H2O < en.

Since the emitted colours are red, green, blue the absorbed colours must be green,red,orange. Hence the  compound [M(H2O)6]2+, [M(en)3]2+, [M(Br)6]4− are blue red and green respectively. Hence option B is correct.

UP PGT Chemistry Mock Test - 5 - Question 21

Ratio of frequency of revolution of electron in the second excited state of Heand second state of hydrogen is

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 21

UP PGT Chemistry Mock Test - 5 - Question 22

The chemical reaction in which reactants require high amount of activation energy are generally

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 22

If activation energy is high rate of reaction will decrease and reaction will be slow.

UP PGT Chemistry Mock Test - 5 - Question 23

Which of the following does not show optical isomerism?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 23

Due to symmetry in the complex [Co(NH3)3CI3], it failed to show optical isomerism. The type of coordination entity show fac and mer isomerism or geometrical isomerism.


The facial (fac) and meridional (mer) isomers of [Co(NH3)3CI3]. 

UP PGT Chemistry Mock Test - 5 - Question 24

We have taken a saturated solution of AgBr.Ksp of AgBr is 12 x 10 – 14 . If 10 – 7 mole of AgNO3 are added to 1 litre of this solution then the conductivity of this solution in terms of  10 – 7 Sm – 1 units will be

[given  Sm2 mol-1 Smmol-1, 5 x 10-3 Sm2mol-1]

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 24

The solubility of Agbr in presence of 10-7 molar AgNo3 is 3 x 10-7 M. therefore [Br] 3 x 10-4 M3, [Ag+] = 4 x 10-4 m3 and [No3-]= 10-4 m3

Therefore 

UP PGT Chemistry Mock Test - 5 - Question 25

Defects in solids can be studied using

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 25

All of the above mentioned methods are used to detect the basic structure of the sample, hence can easily detect the defects present in a sample.

UP PGT Chemistry Mock Test - 5 - Question 26

Why some of the physical properties of solids show different values when measured along different directions in the same crystals?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 26
  • Crystalline solids are anisotropic in nature, that is, some of their physical properties like electrical resistance or refractive index show different values when measured along with different directions in the same crystals.
  • This arises from different arrangements of particles in different directions.
UP PGT Chemistry Mock Test - 5 - Question 27

Which one of the following has the minimum boiling point?  

[AIEEE-2004]

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 27

The boiling point is in the following order

Alkyne> Alkene> n-Alkane> Branched alkane

1-butyne>1-butene> n-butane> isobutane

Option D is correct.

UP PGT Chemistry Mock Test - 5 - Question 28

Hot carbon reacts with steam to produce an equimolar mixture of CO(g)and H2(g) known as water gas

    

Q. 
Energy released , if water gas is used as fuel is

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 28


For this, we will add combustion reactions of both CO and H2 as both combined will give us energy.
ΔrH = -283 kJ+ (-242 kJ) = -525 kJ

UP PGT Chemistry Mock Test - 5 - Question 29

Which of the following is thermally the most stable?

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 29

 

Stability of hydrides decreases down the group so most stable is H2O  

UP PGT Chemistry Mock Test - 5 - Question 30

PCl5 dissociation a closed container as :

PCl5(g)  PCl3(g) + Cl2(g)

If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of PCl5 is α, the partial pressure of PCl3 will be :

Detailed Solution for UP PGT Chemistry Mock Test - 5 - Question 30

PCl5 dissociation a closed container

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