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Which of the following is the harmful effect of cutting forest?
Which of the following is the harmful effect of cutting forest?
A)-Lack of rainfall
B)-Climate change
C)-Both A and B
D)-None of these
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
Which of the following electromagnetic wave play an important role in maintaining the earths warmth or average temperature through the greenhouse effect?
Which of the following electromagnetic wave play an important role in maintaining the earths warmth or average temperature through the greenhouse effect?
A)-Visible rays
B)-Infrared waves
C)-Gamma rays
D)-Ultraviolet rays
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
electromagnetic waves
properties and uses of different radiation
In each of the following questions, select the pair in which the numbers are similarly related as in the given pair.
In each of the following questions, select the pair in which the numbers are similarly related as in the given pair.
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
The total volume of gases evolved at STP at cathode during the entire electrolysis is:
The total volume of gases evolved at STP at cathode during the entire electrolysis is:
A)-58.49 ml
B)-48.23 ml
C)-60.35 ml
D)-35.58 ml
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
electrochemistry
electrolytic cells and electrolysis
The main product of photosynthesis is:
The main product of photosynthesis is:
A)-Glucose
B)-Oxygen
C)-Carbon dioxide
D)-Carbon monoxide
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
The secondary structure of protein is mainly governed by
The secondary structure of protein is mainly governed by
A)-hydrogen bonds
B)-covalent bonds
C)-hydorphobic bonds
D)-disulphide bonds
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
biomolecules
proteins
The noble gases which form clathrate compounds:
The noble gases which form clathrate compounds:
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
the p-block elements
group 18 elements
Microwaves are heat waves which is used to heat up food in ovens.
Microwaves are heat waves which is used to heat up food in ovens.
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
electromagnetic waves
properties and uses of different radiation
The ultra high frequency band of radiowaves in electromagnetic waves is used as in
The ultra high frequency band of radiowaves in electromagnetic waves is used as in
A)-Television waves
B)-Cellular phone communication
C)-Commercial FM radio
D)-Both (b) and (c)
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
electromagnetic waves
introduction to electromagnetic waves
Column I gives three physical quantities. Select the appropriate units for these from choices given in column II. Some of the physical quantities may have more than one choice.
Column I gives three physical quantities. Select the appropriate units for these from choices given in column II. Some of the physical quantities may have more than one choice.
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
electromagnetic induction
inductance
The reciprocal of impedance is called
The reciprocal of impedance is called
A)-reactance
B)-admittance
C)-inductance
D)-susceptance
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
alternating current
lcr circuits
A saturated solution is a metastable solution whose concentration:
A saturated solution is a metastable solution whose concentration:
A)-Is equal to the solubility of the substance in solvent
B)-Is less than the solubility
C)-Exceeds the solubility
D)-Continuously changes
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
solutions
expressing concentration of solutions
To form a saturated solution of salt one must:
To form a saturated solution of salt one must:
A)-cool slowly
B)-cool rapidly
C)-add some salt to cold solution
D)-use a clear vessel
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
solutions
expressing concentration of solutions
The formula of chromic acid is:
The formula of chromic acid is:
A)-(HCrO_3)
B)-(HCrO_4)
C)-(H_2CrO_3)
D)-(H_2CrO_4)
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 9
chemistry
atoms and molecules
writing chemical formula
An optical fiber uses the principle of
An optical fiber uses the principle of
A)-diffraction of light
B)-absorption of light
C)-high transmission coefficient of the fiber material
D)-total internal reflection
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
physics
ray optics and optical instruments
prism
In the presence of crystals of solute, a supersaturated solution is
In the presence of crystals of solute, a supersaturated solution is_____
A)-not stable
B)-stable
C)-cannot be made
D)-none of above
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
solutions
expressing concentration of solutions
The formula of the deep red liquid formed on heating potassium dichromate with KCl in conc. H2SO4 is:
The formula of the deep red liquid formed on heating potassium dichromate with (KCl) in conc. (H_2SO_4) is:
A)-(CrCl_3)
B)-(CrO_2Cl_2)
C)-(CrO_3)
D)-(Cr_2(SO_4)_3)
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
the d-and f-block elements
some important compounds of transition elements
Metal alloys are impure substances of metals so when hammered, they:
Metal alloys are impure substances of metals so when hammered, they:
A)-form ions
B)-convert into thin sheets
C)-show ductility
D)-break into pieces
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 10
chemistry
metals and non metals
properties of metals and non metals
Most lustrous substance is: | Chemistry Questions
Most lustrous substance is: | Chemistry Questions
A)-diamond
B)-gold
C)-silver
D)-iodine
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
class 12
chemistry
the p-block elements
group 17 elements
Refer the above reaction sequence.
Refer the above reaction sequence.
1
answer
asked
Oct 2, 2022
in
General Knowledge
by
anonymous
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