Daily Updates Mock Test 63

50 Questions | Attempts: 152
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  • 1/50 Questions

    The main use of salt in the diet is to

    • Make the taste of food better
    • Produce in small amounts the hydrochloric acid required for the digestion of food
    • Ease the process of cooking
    • Increase the solubility of food particles in water
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About This Quiz

MOCK TEST 63
SYLLABUS : CHEMISTRY
TIME : 20 MINUTES FULL MARKS : 50*5 = 250
EACH QUESTION CARRIES 5 MARKS , -VE MARKING = - 1 / WRONG ANSWER
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Daily Updates Mock Test 63 - Quiz

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  • 2. 

    The most malleable metal is

    • Platinum

    • Silver

    • Iron

    • Gold

    Correct Answer
    A. Gold
  • 3. 

    The mass number of a nucleus is

    • Always less than its atomic number

    • The sum of the number of protons and neutrons present in the nucleus

    • Always more than the atomic weight

    • A fraction

    Correct Answer
    A. The sum of the number of protons and neutrons present in the nucleus
  • 4. 

    The gas used in the manufacture of vanaspati from vegetable oil is

    • Hydrogen

    • Oxygen

    • Nitrogen

    • Carbon dioxide

    Correct Answer
    A. Hydrogen
  • 5. 

    The first metal used by man was

    • Iron

    • Copper

    • Gold

    • Bronze

    Correct Answer
    A. Copper
  • 6. 

    The iron ore magnetite consists of

    • Fe2O3

    • Fe3OH4

    • FeCO3

    • 3Fe2O3 .. 3H2O

    Correct Answer
    A. Fe2O3
  • 7. 

    The major constituent of air is

    • Nitrogen

    • Carbon dioxide

    • Oxygen

    • Hydrogen

    Correct Answer
    A. Nitrogen
  • 8. 

    The main active constituent of tea and coffee is

    • Nicotine

    • Chlorophyll

    • Caffeine

    • Aspirin

    Correct Answer
    A. Caffeine
  • 9. 

    The hardest form of carbon is

    • Coke

    • Graphite

    • Diamond

    • Charcoal

    Correct Answer
    A. Diamond
  • 10. 

    The inherited traits of an organism are controlled by

    • RNA molecules

    • Nucleotides

    • DNA molecules

    • Enzymes

    Correct Answer
    A. DNA molecules
  • 11. 

    The monomer of polythene is

    • Vinyl chloride

    • Ethylene

    • Ethyl alcohol

    • None of the above

    Correct Answer
    A. Ethylene
  • 12. 

    The graphite rods in the nuclear reactor

    • React with U to release energy

    • Produce neutrons

    • Undergo combustion which triggers the nuclear fission

    • Convert fast moving neutrons into thermal neutrons

    Correct Answer
    A. Convert fast moving neutrons into thermal neutrons
  • 13. 

    The hydronium ion is

    • H+

    • HO -

    • H2+

    • H3O+

    Correct Answer
    A. H3O+
  • 14. 

    The most important ore of aluminium is

    • Bauxite

    • Magnetite

    • Haematite

    • Monazite

    Correct Answer
    A. Bauxite
  • 15. 

    The ore which is found in abundance in India is

    • Monazite

    • Fluorspar

    • Bauxite

    • Magnetite

    Correct Answer
    A. Monazite
  • 16. 

    The luster of a metal is due to

    • its high density

    • Its high polishing

    • Its chemical inertness

    • Presence of free electrons

    Correct Answer
    A. Presence of free electrons
  • 17. 

    The gas used for artificial ripening of green fruit is

    • Ethylene

    • Ethane

    • Carbon dioxide

    • Acetylene

    Correct Answer
    A. Ethylene
  • 18. 

    The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

    • Carbon

    • Hydrogen

    • Oxygen

    • Nitrogen

    Correct Answer
    A. Oxygen
  • 19. 

    The items amenable to detection by soft x-rays are

    • Contrabands

    • Lead in bullets

    • Narcotics

    • Genuine coins from counterfeit coins

    Correct Answer
    A. Genuine coins from counterfeit coins
  • 20. 

    The ionic radii of N3-, O2-, F- and Na+ follows the order

    • N3- > O2- > F- > Na+

    • N3- > Na+ > O2- > F-

    • Na+ > O2- > N3- > F-

    • O2- > F- > Na+ > N3-

    Correct Answer
    A. N3- > O2- > F- > Na+
  • 21. 

    The molecule which has the highest percentage of ionic character among the following is

    • HI

    • HF

    • HCI

    • HBr

    Correct Answer
    A. HF
  • 22. 

    The high reactivity of fluorine is due to

    • Its high electro negativity

    • Small size of fluorine atom

    • Availability of d-orbitals

    • Strong F - F bond

    Correct Answer
    A. Its high electro negativity
  • 23. 

    The most extensive, commercially useful source of thorium as monazite sand occurs in India at

    • Orissa coast

    • Travancore coast

    • West Bengal coast

    • Gujarat coast

    Correct Answer
    A. Travancore coast
  • 24. 

    The number of electrons presents in H+ is

    • Zero

    • One

    • Two

    • Three

    Correct Answer
    A. Zero
  • 25. 

    The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

    • 1/6

    • 1/3

    • 1/8

    • 1/4

    Correct Answer
    A. 1/8
  • 26. 

    The most abundant rare gas in the atmosphere is

    • He

    • Ne

    • Ar

    • Xe

    Correct Answer
    A. Ar
  • 27. 

    The material which can be deformed permanently by heat and pressure is called a

    • Thermoplastic

    • Thermoset

    • Chemical compound

    • Polymer

    Correct Answer
    A. Thermoset
  • 28. 

    The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

    • 3 billion years

    • 100 years

    • 0.01 minute

    • 13 days

    Correct Answer
    A. 0.01 minute
  • 29. 

    The most electropositive elements among the following is

    • Na

    • Ca

    • K

    • Cs

    Correct Answer
    A. Cs
  • 30. 

    The method that cannot be used for removing permanent hardness of water is

    • Adding sodium carbonate

    • Distillation

    • Adding caustic soda

    • Boiling

    Correct Answer
    A. Boiling
  • 31. 

    The main chemical constituent of clay is

    • Silicon oxide

    • Aluminium borosilicate

    • Zeolites

    • Aluminium silicate

    Correct Answer
    A. Aluminium silicate
  • 32. 

    The mineral containing both magnesium and calcium is

    • Magnesite

    • Calcite

    • Carnallite

    • Dolomite

    Correct Answer
    A. Dolomite
  • 33. 

    The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

    • 4

    • 5

    • 2

    • 0

    Correct Answer
    A. 4
  • 34. 

    The heat energy produced when the human body metabolises 1 gram of fat is

    • 30 KJ

    • 1 KJ

    • 39 KJ

    • 29 KJ

    Correct Answer
    A. 39 KJ
  • 35. 

    The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

    • 1.568 x 103

    • 6.023 x 1019

    • 4.84 x 1017

    • 6.023 x 1023

    Correct Answer
    A. 6.023 x 1019
  • 36. 

    The metal does not give H2 on treatment with dilute HCL is

    • Zn

    • Fe

    • Ag

    • Ca

    Correct Answer
    A. Ag
  • 37. 

    The maximum number of isomers for an alkene with molecular formula C4H8 is

    • 5

    • 4

    • 2

    • 3

    Correct Answer
    A. 4
  • 38. 

    The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

    • An addition reaction

    • A condensation reaction

    • An oxidation reaction

    • An elimination reaction

    Correct Answer
    A. A condensation reaction
  • 39. 

    The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

    • Chain isomerism

    • Functional group isomerism

    • Positional isomerism

    • Metamerism

    Correct Answer
    A. Positional isomerism
  • 40. 

    Zone refining is used for the purification of

    • Au

    • Ge

    • Ag

    • Cu

    Correct Answer
    A. Ge
  • 41. 

    The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

    • Cineole

    • Engenol

    • Geraniol

    • Limonene

    Correct Answer
    A. Cineole
  • 42. 

    The inexpensive and commonly used variety of glass is called soda glass. It is called so because

    • Was used initially for making bottles of soda(carbonated drink)

    • Is made using soda(sodium carbonate)

    • Was initially used for storing sodium carbonate

    • Is made using soda lime

    Correct Answer
    A. Is made using soda(sodium carbonate)
  • 43. 

    The Latin word formica means ant. The name formic acid is derived from this Latin word because

    • This acid, in ancient times, was used to eliminate ant-hills

    • This corrosive acid is secreted by ants to drive away their enemies

    • This acid was first obtained by the distillation of ants

    • Ants are attracted by the odour of this acid

    Correct Answer
    A. This acid was first obtained by the distillation of ants
  • 44. 

    What are the number of moles of CO2 which contains 16 g of oxygen?

    • 0.5 mole

    • 0.2 mole

    • 0.4 mole

    • 0.25 mole

    Correct Answer
    A. 0.5 mole
  • 45. 

    The oil used in the froth floatation process is

    • Coconut oil

    • Olive oil

    • Kerosene oil

    • Pine oil

    Correct Answer
    A. Pine oil
  • 46. 

    The hottest part of the gas flame is known as

    • Luminous zone

    • Dark zone

    • Blue zone

    • Non-luminous zone

    Correct Answer
    A. Non-luminous zone
  • 47. 

    The mass of one Avogadro number of helium atom is

    • 1.00 gram

    • 4.00 gram

    • 8.00 gram

    • 4 x 6.02 x 1023 gram

    Correct Answer
    A. 4.00 gram
  • 48. 

    The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

    • 5x/36

    • 5x

    • 7.2 x

    • X/6

    Correct Answer
    A. 5x/36
  • 49. 

    The number of waves in n x 10th Bohr's orbit are

    • N2

    • N

    • N-2

    • N3

    Correct Answer
    A. N

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  • Current Version
  • Mar 21, 2022
    Quiz Edited by
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  • Sep 15, 2018
    Quiz Created by
    Daily Updates
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