Organisation : Mizoram Board of School Education
Document Type : Question Paper
Exam : State Technical Entrance Examination
Subject : Chemistry
Website : http://www.mbse.edu.in/
Download Model/Sample Question Paper:
State Technical Entrance Examination Question Papers Chemistry
2014 https://www.pdfquestion.in/uploads/7305-Chemistry_2014.pdf
2013 https://www.pdfquestion.in/uploads/7305-Chemistry_2013.pdf
2012 https://www.pdfquestion.in/uploads/7305-Chemistry_2012.pdf
MBSE STEE Chemistry Model Paper
Chemistry :
1. Heating pyrites to remove sulphur is called
(A) Roasting
(B) Smelting
(C) Calcination
(D) Liquation
Related : Mizoram Board of School Education State Technical Entrance Exam Physics Question Paper : www.pdfquestion.in/7299.html
2. What is the other name for the d-block elements ?
(A) Representative elements
(B) Transition elements
(C) Inner transition elements
(D) Transuranium elements
4. The process of displacement of electrons along the chain of carbon atoms due to the presence of a polar covalent bond at one end of the chain is called
(A) electromeric effect
(B) mesomeric effect
(C) inductive effect
(D) hyperconjugation
7. The colligative properties of a solution depends on
(A) the number of particles of solvent
(B) the number of particles of solute
(C) the nature of particles of solute
(D) the nature of particles of solvent
8. +2 oxidation state is predominant in Pb due to
(A) common ion effect
(B) solvent effect
(C) photoelectric effect
(D) inert pair effect
9. The basic strength of amines in the gas phase increases in the order
(A) 1o amine < 2o amine < 3o amine
(B) 3o amine < 1o amine < 2o amine
(C) 1o amine > 2o amine > 3o amine
(D) 2o amine > 3o amine > 1o amine
10. The long form of the Periodic Table is based on
(A) atomic size
(B) electronic configuration
(C) atomic mass
(D) metallic character
12. Consider the following statements
(i) Entropy of the universe is constant
(ii) All natural processes are irreversible thermodynamically
(iii) Gibb’s energy is a state function
(iv) Enthalpy of combustion is always negative
The correct statement(s) is/are
(A) (ii) only (B) (i) and (ii)
(C) (i), (iii) and (iv) (D) (ii), (iii) and (iv)
14. Be and Mg does not give flame colouration because of
(A) low stability
(B) large atomic radius
(C) high ionization enthalpy
(D) low hydration enthalpy
15. The oxidation state of Cr in potassium dichromate is
(A) +5
(B) +6
(C) +7
(D) +8
17. The process of separating the particles of colloids from crystalloids by means of diffusion through a suitable membrane is
(A) Peptization
(B) Ultra-centrifugation
(C) Ultra-filtration
(D) Dialysis
20. According to Boyle’s law, at constant mass and temperature, the volume of a fixed mass of gas is
(A) inversely proportional to pressure
(B) directly proportional to pressure
(C) constant
(D) not related to pressure
21. The atomic mass of an element is 24 and the third shell of its atom contains 2 electrons. The number of protons in its nucleus will be
(A) 22
(B) 12
(C) 10
(D) 8
22. The most abundant element in the earth’s crust is
(A) Aluminium
(B) Silicon
(C) Oxygen
(D) Iron
23. Actinoid contraction is due to increase in
(A) atomic number
(B) shielding of f-orbital
(C) size of the f-orbital
(D) effective nuclear charge
24. Choose the correct statement from the following
(A) Bakelite is an example of thermoplastic
(B) Co-polymer is a polymer formed from one type of monomer
(C) Glyptal is used in manufacture of paints
(D) Nylon-2-nylon-6 is non-biodegradable
25. Which technique of purification is based on the difference in the rates at which the components of a mixture are adsorbed on a suitable adsorbent ?
(A) Chromatography
(B) Differential extraction
(C) Steam distillation
(D) Fractional distillation
27. Which of the following statements is incorrect ?
(A) Strong acid has a weak conjugate base
(B) G D should be negative for spontaneous reaction
(C) For water, the conjugate acid and base are H+ and OH– respectively
(D) NH4Cl is an example of basic buffer
32. Nitrogen exists as a gas because it
(A) is highly reactive
(B) forms multiple bonds
(C) is small in size
(D) has a weak tendency for catenation
34. The correct decreasing order of stability of the different conformation of butane is
(A) Skew > Eclipsed > Anti > Fully eclipsed
(B) Anti > Eclipsed > Skew > Fully eclipsed
(C) Anti > Skew > Eclipsed > Fully eclipsed
(D) Skew > Anti > Fully eclipsed > Eclipsed
35. The bond that determines the secondary structure of protein is
(A) covalent bond
(B) hydrogen bond
(C) sulphur linkage
(D) ionic bond
38. The purple colour of potassium permanganate is due to
(A) charge transfer
(B) d-d transition
(C) f-f transition
(D) d-f transition
39. Number of moles of oxygen in 16 g of oxygen molecule is
(A) 0.5
(B) 1
(C) 1.5
(D) 2
40. Phenol is more resonance stabilised than ethyl alcohol because
(A) phenol has higher boiling point than alcohol
(B) of stronger hydrogen bonding in phenol than in ethyl alcohol
(C) phenoxide ion is more resonance stabilised than phenol
(D) ethoxide ion is less resonance stabilised than ethyl alcohol
41. When the temperature increases, viscosity of the liquid
(A) remains constant
(B) increases
(C) decreases
(D) shows irregular behavior
42. Buna-N is formed by the condensation polymerization of
(A) Hexamethylene diammine and adipic acid
(B) Buta-1,3-diene and acrylonitrile
(C) Phenol and acrylonitrile
(D) 1,3-butadiene and adipic acid
43. Which of the following statements is TRUE ?
(A) Mercury is a biodegradable pollutant
(B) Classical smog is oxidising in nature
(C) CO2 is the most important Greenhouse gas
(D) BOD of clean water should be more than 5 ppm
46. Which of the following statements is not true regarding Crystal Field Theory ?
(A) The crystal field splitting is lesser in octahedral complexes than in tetrahedral complexes
(B) Tetrahedral complexes have four ligands while octahedral complexes have six ligands
(C) Strong field ligands produce low spin complex
(D) Weak field ligands produce high spin complex
48. During a redox reaction in an electrochemical cell
(A) chemical energy is converted into electrical energy
(B) electrical energy is converted into chemical energy
(C) cathode is negative and anode is positive
(D) electron flows from cathode to anode in the external circuit
50. According to the kinetic theory of gases, when gas molecules collide with one another and also against the walls of the container,
(A) there is no gain or loss of kinetic energy
(B) gain of kinetic energy occurs
(C) loss of kinetic energy occurs
(D) the molecules are at rest