BSC Chemistry 1st Year Question Papers. We covered all the BSC Chemistry 1st Year Question Papers MCQs in this post for free so that you can practice well for the exam.
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BSC Chemistry 1st Year Objective Question Papers for Students
Which one of the following statements is correct?
(a) Rutherford’s alpha-particle scattering experiment led to the discovery of the electron.
(b) J.J. Thomson suggested that the nucleus of an atom contains protons.
(c) The atomic number of an element is the same as the number of protons in the nucleus of its atom.
(d) The mass number of an atom is equal to the number of electrons in its shells.
Option c – The atomic number of an element is the same as the number of protons in the nucleus of its atom
Which one of the following statements is not correct?
(a) The application of lime makes the soil acidic.
(b) High acidity in soil is typical of a humid climate.
(c) Increasing soil acidity results in declining soil fertility.
(d) Arid climate is characterized by alkaline soil.
Option a – The application of lime makes the soil acidic
The alkali metals have relatively low melting points. Which one of the following alkali metals is expected to have the highest melting point?
(a) Li
(b) Na
(c) K
(d) Rb
Option a – Li
The absolute zero, i.e., the temperature below which is not achievable, is about:
(a) 0°C
(b) -273 K
(c) -273°C
(d) -300°C
Option c – -273°C
Addition of gypsum to cement:
(a) Reduces the setting time of cement
(b) Produces a very light-colored cement
(c) Increases the setting time of cement
(d) Forms a shining surface
Option a – Reduces the setting time of cement
To weld metals together, a high temperature is required. Such a high temperature is obtained by burning:
(a) Acetylene in oxygen
(b) LPG in oxygen
(c) Methane in oxygen
(d) Acetylene in nitrogen
Option a – Acetylene in oxygen
The cleaning action of soap and detergent in water is due to the formation of:
(a) Micelle
(b) Salt
(c) Base
(d) Acid
Option a – Micelle
Which one among the following does not wet the walls of the glass vessel in which it is kept?
(a) Water
(b) Alcohol
(c) Mercury
(d) Phenol
Option c – Mercury
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