Bastar University BSC 2nd Year Question Paper. We covered all the Bastar University BSC 2nd Year Question Paper in this post for free so that you can practice well for the exam.
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Bastar University BSC 2nd Year Objective Question Paper for Students
Ice floats in water, but sinks in alcohol, because
(a) Water is more transparent than alcohol.
(b) Ice is formed by freezing water
(c) Ice is solid while alcohol is liquid
(d) Ice is lighter than water and heavier than alcohol.
Option d – Ice is lighter than water and heavier than alcohol
Steel bullet floats in mercury because
(a) No object can sink in the mercury
(b) The density of mercury is higher than that of steel
(c) Steel has a higher density than mercury
(d) Bullet cannot swim
Option b – The density of mercury is higher than that of steel
The density of water is maximum
(a) 4°
(b) 4k
(c) 4 ° F
(d) -4 °C
Option a – 4°
Changing the quantity of the object will remain unchanged
(a) volume
(b) weight
(c) mass
(d) density
Option d – density
When a bottle is filled with water and allowed to freeze, the bottle breaks, because
(a) Water expands upon freezing
(b) Bottle shrinks at freezing point
(c) The outside temperature of the bottle is higher than the inside
(d) Water expands on heating
Option a – Water expands upon freezing
A ship moving in a river comes into the sea, then the ship
(a) The level will be the same as before
(b) will rise slightly
(c) will go down slightly
(d) will be up or down depending on the load.
Option b – will rise slightly
Davisson and Germer’s experiment proved
a. diffraction of electrons
b. existence of electrons
c. existence of nucleus
d. none of the above
Option a – diffraction of electrons
The possible number of values of the magnetic orbital quantum number for the orbital quantum number l is
a. 2l + 1
b. 2l
c. 2l – 1
d. 2l – 2
Option a – 2l + 1
The absorption of X-rays in a given material follows
a. an exponential curve
b. a straight line
c. a parabola
d. none of the above
Option a – an exponential curve
The second line of the Balmer series has a wavelength of 4851 Å. The wavelength of the first line will be
a. 6562 Å
b. 6000 Å
c. 7718 Å
d. 5619 Å
Option a – 6562 Å
X-rays can be used
a. To detect flaws in casting and welding
b. To detect heavy elements
c. For boring, cutting, and welding
d. None of the above
Option a – To detect flaws in casting and welding
The transition emitted photons of the highest frequency in a hydrogen atom is
a. j = 4 to j = 2
b. j = 1 to j = 2
c. j = 2 to j = 4
d. j = 2 to j = 1
Option a – j = 4 to j = 2
Kinnow, a high-yield citrus tree fruit, is grown extensively in
(a) Kerala
(b) Uttarakhand
(c) Punjab
(d) Sikkim
Option c – Punjab
What type of farming is practiced in the densely populated regions of the world?
(a) Commercial farming
(b) Extensive farming
(c) Intensive farming
(d) Plantation farming
Option c – Intensive farming
Mixed farming means:
(a) growing two crops at the same time
(b) growing different crops in succession
(c) producing crops
(d) using a mixture of manures and fertilizer
Option a – growing two crops at the same time
Which one of the following regions experiences three cropping seasons for rice in India (Rice Bowl of India)?
(a) Krishna-Godavari delta
(b) Brahmaputra valley
(c) Coastal Kerala
(d) Littoral Tamil Nadu
Option b – Brahmaputra valley
Which of the following States of India leads in Guar Gum production?
(a) Rajasthan
(b) Gujarat
(c) Punjab
(d) Haryana
Option a – Rajasthan
Fertility of soil can be improved by:
(a) adding living earthworms
(b) adding dead earthworms
(c) removing dead earthworms
(d) removing living earthworms and adding dead earthworms
Option a – adding living earthworms
Extensive subsistence agriculture is:
(a) farming on the slopes of the Western Ghats
(b) Farming in the thickly populated areas
(c) Farming in the thinly populated areas
(d) Farming in the forests of the equatorial region
Option c – Farming in the thinly populated areas
The de-Broglie wavelength of an electron beam accelerated through a potential difference of 60 volts is
a. 1.51 Å
b. 2.2 Å
c. 420 Å
d. 1.5 Å
Option d – 1.5 Å
The de-Broglie wavelength associated with an electron of energy 5 MeV is
a. 5.4 Å
b. 0.0054 Å
c. 0.0005 Å
d. 500 Å
Option b – 0.0054 Å
The work function of the photoelectric effect depends on
a. on metal surface
b. frequency of incident light
c. for all metals work functions the same
d. none of the above
Option a – on metal surface
The charge of an alpha particle
a. Negative
b. Neutral
c. Positive
d. None of the above
Option c – Positive
Protons and Neutrons in the nuclei of atoms are called
a. Quantum number
b. Atomic number
c. Neucleons
d. None of the above
Option c – Neucleons
Spectral lines resulting from the transitions n=2 to n=1 in the atoms and ions are shortest wavelength produced by
a. Double ionized lithium
b. Hydrogen atom
c. Deuterium atom
d. Helium atom
Option a – Double ionized lithium
Cathode rays consist of negatively charged particles which are
a. Photons
b. Positrons
c. Neutrons
d. Electrons
Option d – Electrons
Who developed the radiocarbon dating of archaeological samples
a. W.F. Libby
b. Otto Hahn
c. Fermi
d. de-Broglie
Option b – Otto Hahn
The photoelectric effect studies are useful for
a. the quantum nature of matter
b. structure of the nucleus
c. Bohr’s atomic model
d. none of the above
Option a – the quantum nature of matter
Which one of the following statements is not correct?
(a) The velocity of sound in air is independent of pressure.
(b) The velocity of sound in air increases with an increase in temperature.
(c) The velocity of sound in air decreases as humidity increases.
(d) The velocity of sound in air is not affected by the change in amplitude and frequency.
Option c – The velocity of sound in air decreases as humidity increases
What is the minimum distance (in meters) required to hear an echo?
(a) 10
(b) 13
(c) 17
(d) 21
Option c – 17
To hear a distinct echo, the time interval between the original sound and the reflected sound must be at least
(a) 1 second
(b) 0.1 second
(c) 0.2 second
(d) 2 seconds
Option b – 0.1 second
On reduction, secondary amine is given by
(A) Nitrobenzene
(B) Methyl cyanide
(C) Nitroethane
(D) Methyl isocyanide
Option d – Methyl isocyanide
The reaction by which a primary amine is formed from a primary amide is called
(A) Hoffmann bromamide reaction
(B) Gabriel phthalimide reaction
(C) Carbylamine reaction
(D) Liebermann nitrosoamine reaction
Option a – Hoffmann bromamide reaction
Which of the following compounds gives the dye test?
(A) Aniline
(B) Methylamine
(C) Diphenylamine
(D) Ethylamine
Option a – Aniline
An organic compound (A) on reduction gives compound (B). (B) on treatment with CHCl3 and alcoholic KOH gives (C). (C) on catalytic reduction gives N-methylaniline. The compound (A) is
(A) methylamine
(B) nitromethane
(C) aniline
(D) nitrobenzene
Option d – nitrobenzene
Choose the correct statement.
(A) Methylamine is slightly acidic.
(B) Methylamine is less basic than ammonia.
(C) Methylamine is a stronger base than ammonia.
(D) Methylamine forms salts with alkalies.
Option c – Methylamine is a stronger base than ammonia
2-Methyl propanal is prepared by Stephen’s reaction from the nitrile derivative of
(A) Isopropyl chloride
(B) Isobutyl bromide
(C) Isobutane
(D) n-Propane
Option a – Isopropyl chloride
Dibenzyl cadmium on treatment with ethanoyl chloride gives
(A) Methyl phenyl ketone
(B) 1-Phenyl propanone
(C) Phenyl acetone
(D) Benzene carbaldehyde
Option c – Phenyl acetone
The product of electrophilic substitution reaction between benzene and propanoyl chloride is
(A) Benzophenone
(B) 2-Phenyl ethanal
(C) 1-Phenyl propan-1-one
(D) 1-Phenyl propan-2-one
Option c – 1-Phenyl propan-1-one
Methyl phenyl ketone is prepared by Friedel-Crafts reaction from
(A) Benzene and acetophenone
(B) Benzene and ethanoyl chloride
(C) Benzene and bromobenzene
(D) Benzene and benzoyl chloride
Option b – Benzene and ethanoyl chloride
Diphenyl ketone is obtained by Friedel-Craft reaction from
(A) Benzene and benzoyl chloride
(B) Benzene and acetyl chloride
(C) Benzene and chlorobenzene
(D) Benzene and benzophenone
Option a – Benzene and benzoyl chloride
Which of the following on hydration does not produce butanone?
(A) Propyne
(B) Ethyl acetylene
(C) Dimethyl acetylene
(D) But-2-yne
Option a – Propyne
Benzene on acetylation gives
(A) Methyl benzene
(B) Methoxy benzene
(C) Phenyl ethanone
(D) Benzaldehyde
Option c – Phenyl ethanone
By stephen’s reaction, alkanals are prepared from
(a) Carboxyic acids
(b) Esters
(c) Aromatic Compound
(d) Alkane nitriles
Option d – Alkane nitriles
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