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question_answer1)
Who among the following is called. The father of modem chemistry?
A)
Michael Faraday done
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B)
Lavoisier done
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C)
Proust done
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D)
Linus Pauling done
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question_answer2)
Match the following
A.
|
Azidothymidine
|
1.
|
Antibiotic
|
B.
|
cis-Platin and taxol
|
2.
|
Drugs for AIDS patient
|
C.
|
Streptomycin
|
3.
|
Drugs for treating cancer patients
|
D.
|
Paracetamol
|
4.
|
Antipyretic
|
A)
A-2, B-3, C-1, D-4 done
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B)
A-1, B-2, C-4, D-3 done
clear
C)
A-4, B-2, C-3, D-1 done
clear
D)
A-1, B-2, C-3, D-4 done
clear
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question_answer3)
The chemical technique applied to find out age of fossils is knows as
A)
Carbon dating done
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B)
Nuclear fusion done
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C)
Photosynthesis done
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D)
Fermentation done
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question_answer4)
The chemical formula for 'laughing gas' is
A)
\[{{N}_{2}}O\] (Nitrous oxide) done
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B)
\[NO\] (Nitric oxide) done
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C)
\[N{{O}_{2}}\] (Nitrogen dioxide) done
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D)
\[{{N}_{2}}{{O}_{5}}\] (Nitrogen pentoxide) done
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question_answer5)
The compound used as 'artificial sweetener' is
A)
Saccharine done
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B)
Tartaric acid done
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C)
citric acid done
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D)
octane done
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question_answer6)
The chemical name of 'Marsh gas' is
A)
Ethene done
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B)
Methane done
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C)
Propane done
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D)
Hexane done
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question_answer7)
Wooden pencil used for writing contains
A)
Graphite done
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B)
Lead done
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C)
Salt done
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D)
Cane sugar done
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question_answer8)
The chemical formula of Borax is
A)
\[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\] done
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B)
\[CaCOC{{I}_{2}}\] done
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C)
\[BaS{{O}_{4}}\] done
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D)
\[Ca{{(S{{O}_{4}})}_{2}}\] done
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question_answer9)
The chemical formula of plaster of parts is [BPSC]
A)
\[CaS{{O}_{4}}.5{{H}_{2}}O\] done
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B)
\[2CaS{{O}_{4}}.{{H}_{2}}O\] done
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C)
\[(CaS{{O}_{4}}).2{{H}_{2}}O\] done
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D)
\[COSO4.MGO\] done
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question_answer10)
The chemical name of lime stone is [UPPCS]
A)
Calcium chloride done
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B)
Calcium oxide done
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C)
Calcium carbonate done
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D)
Calcium done
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question_answer11)
Blue vitriol is [UPPCS]
A)
Copper sulphate done
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B)
Calcium sulphate done
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C)
Iron sulphate done
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D)
Sodium sulphate done
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question_answer12)
The main component of Gobar gas is? [CDS]
A)
Chlorine done
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B)
Hydrogen done
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C)
Ethylene done
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D)
Methene done
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question_answer13)
The main of component of Biogas is
A)
Methane done
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B)
Ethane done
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C)
Propane done
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D)
Butane done
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question_answer14)
Which chemical was an important symbol in our freedom struggle? [CDS]
A)
Glucose done
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B)
Fertilizer done
clear
C)
Medicine done
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D)
Sodium chloride done
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question_answer15)
Match the following columns? [NDA]
|
Column I (Fuel Gas) |
|
Column II (Major constituent) |
A. |
CNG |
1. |
Carbon monoxide, hydrogen |
B. |
Coal gas |
2. |
Butane, propene |
C. |
LPG |
3. |
Methane, ethane |
D. |
Water gas |
4. |
Hydrogen, methane, carbon monoxide |
A)
A-2, B-1, C-3, D-4 done
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B)
A-2, B-4, C-3, D-1 done
clear
C)
A-3, B-4, C-2, D-1 done
clear
D)
A-3, B-1, C-2, D-4 done
clear
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question_answer16)
The phenomenon of radioactivity was invented by
A)
Maril Curie done
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B)
Pierre Curie done
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C)
Henry Bacquerel done
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D)
J.J Thompson done
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question_answer17)
Which one of the following is used in the preparation of antiseptic solution? [CDS]
A)
Potassium nitrate done
clear
B)
Iodine done
clear
C)
Iodine chloride done
clear
D)
Potassium chloride done
clear
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question_answer18)
Aqua-regia used by alchemists to separate silver and gold is a mixture of [CDS]
A)
hydrochloric acid (concentrated) and nitric acid (concentrated) done
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B)
hydrochloric acid (concentrated) and sulphuric acid (concentrated) done
clear
C)
nitric acid (concentrated) and sulphuric acid (concentrated) done
clear
D)
hydrochloric acid (dilute) and sulphuric acid (dilute) done
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question_answer19)
Nail polish remover contains [CDS]
A)
acetone done
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B)
benzene done
clear
C)
formaldehyde done
clear
D)
acetic acid done
clear
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question_answer20)
Which one among the following is a sin smelling agent added to LPG cylinder to help the detection of gas leakage? [CDS]
A)
Ethanol done
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B)
Thioethanol done
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C)
Methane done
clear
D)
Chloroform done
clear
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question_answer21)
Vermicompost is an/a [CDS]
A)
inorganic fertilizer done
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B)
toxic substance done
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C)
organic bio fertilizer done
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D)
synthetic fertilizer done
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question_answer22)
Which of the following is a good lubricant? [CDS]
A)
Diamond powder done
clear
B)
Graphite powder done
clear
C)
Molten carbon done
clear
D)
Alloy of carbon and iron done
clear
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question_answer23)
The main constituent of vinegar is
A)
Acetic acid done
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B)
Ascorbic acid done
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C)
Citric acid done
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D)
Tartaric acid done
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question_answer24)
To weld metals together, high temperature is required. Such a high temperature is obtained by burning [NDA]
A)
Acetylene in oxygen done
clear
B)
LPG in oxygen done
clear
C)
Methane in oxygen done
clear
D)
Acetylene in nitrogen done
clear
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question_answer25)
Which one is a sublime substance?
A)
Table salt done
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B)
Sugar done
clear
C)
Iodine done
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D)
Potassium Iodide done
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question_answer26)
What happens when a fixed amount of oxygen gas is taken in a cylinder and compressed at constant temperature?
A. Number of collisions of oxygen molecules at per unit area of the wall of the cylinder increase. |
B. Oxygen (\[{{O}_{2}}\]) gets converted into ozone (\[{{O}_{3}}\]). |
C. Kinetic energy of the molecules of oxygen gas increases. |
A)
A and C done
clear
B)
B and C done
clear
C)
C only done
clear
D)
A only done
clear
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question_answer27)
A gas can be compressed to a fraction of its volume. The same volume of a gas can be spread all over a room. The reason for this is that
A)
the volume occupied by molecules of a gas is negligible as compared to the total volume of the gas. done
clear
B)
gases consists of molecules which are in a state of random motion done
clear
C)
gases consist of molecules having very large inter-molecular space which can be reduced or increased under ordinary conditions done
clear
D)
None of these done
clear
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question_answer28)
Select the correct order of evaporation for water, alcohol, petrol and kerosene oil
A)
water > alcohol > kerosene oil > petrol done
clear
B)
alcohol > petrol > water > kerosene oil done
clear
C)
petrol > alcohol > water > kerosene oil done
clear
D)
petrol > alcohol > kerosene oil > water done
clear
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question_answer29)
Non-reacting gases have a tendency to mix with each other. This phenomenon is known as
A)
chemical reaction done
clear
B)
diffusion done
clear
C)
effusion done
clear
D)
explosion done
clear
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question_answer30)
Boyle's law states that the
A)
pressure of a gas is directly proportional to the temperature at constant volume done
clear
B)
pressure of a gas is inversely proportional the volume at constant temperature done
clear
C)
volume is directly proportional to the temperature at constant pressure done
clear
D)
None of the above done
clear
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question_answer31)
The boiling point of alcohol is \[78{}^\circ C\]. What is this temperature in Kelvin scale
A)
373 K done
clear
B)
351 K done
clear
C)
375 K done
clear
D)
78 K done
clear
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question_answer32)
At higher altitudes
A)
boiling point of a liquid increases done
clear
B)
boiling point of a liquid decreases done
clear
C)
no change in boiling point done
clear
D)
melting point of solid increases done
clear
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question_answer33)
When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to
A)
boiling done
clear
B)
melting of potassium permanganate crystals done
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C)
sublimation of crystals done
clear
D)
diffusion done
clear
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question_answer34)
Which of the following processes is known as fusion?
A)
change of liquid to solid done
clear
B)
change of solid to liquid done
clear
C)
change of liquid to vapour done
clear
D)
change of gaseous state to solid state done
clear
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question_answer35)
When a gas is compressed keeping temperature constant, it results in
A)
increase in speed of gaseous molecules done
clear
B)
increase in collision among gaseous molecules done
clear
C)
decrease in speed of gaseous molecules done
clear
D)
decrease in collision among gaseous molecules. done
clear
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question_answer36)
A pungent smell often present near the urinals is due to
A)
sulphur-di-oxide done
clear
B)
chlorine done
clear
C)
ammonia done
clear
D)
urea done
clear
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question_answer37)
Kerosene is a mixture of
A)
aromatic hydrocarbons done
clear
B)
aliphatic hydrocarbons done
clear
C)
saturated hydrocarbons done
clear
D)
alicyclic hydrocarbons done
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question_answer38)
The oxide of which of the following elements is used as a coolant?
A)
Silicon done
clear
B)
Nitrogen done
clear
C)
Carbon done
clear
D)
Phosphorus done
clear
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question_answer39)
Which one of the following is not a mixture? [NDA]
A)
Air done
clear
B)
Mercury done
clear
C)
Milk done
clear
D)
Cement done
clear
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question_answer40)
Which one among the following statements regarding the properties of mixtures and compounds is not correct? [NDA]
A)
A mixture shows the properties of its constituents but the properties of a compound are entirely different from its constituents done
clear
B)
A mixture may be homogeneous or heterogeneous but a compound is a homogeneous substance done
clear
C)
The constituents of a mixture can be separated by physical methods but those of a compound cannot be separated by physical methods done
clear
D)
Energy is either absorbed or evolved during the preparation of a mixture but not in the preparation of a compound done
clear
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question_answer41)
Which one among the following is not a mixture?
A)
Graphite done
clear
B)
Glass done
clear
C)
Brass done
clear
D)
Steel done
clear
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question_answer42)
The latest discovered state of matter is [NDA]
A)
solid done
clear
B)
Bose-Einstein condensation done
clear
C)
plasma done
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D)
liquid done
clear
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question_answer43)
Which one of the following is not a mixture?
A)
Toot paste done
clear
B)
Toilet soap done
clear
C)
Baking soda done
clear
D)
Vinegar done
clear
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question_answer44)
Iodised salt is a [CDS]
A)
mixture of potassium iodide and common salt done
clear
B)
mixture of molecular iodide and common salt done
clear
C)
compound formed by combination of potassium iodide and common salt done
clear
D)
compound formed by molecular iodine and common salt done
clear
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question_answer45)
What type of mixture is smoke? [CDS]
A)
Solid mixed with a gas done
clear
B)
Gas mixed with a gas done
clear
C)
Liquid mixed with a gas done
clear
D)
Gas mixed with a liquid and a solid done
clear
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question_answer46)
Iron sheet kept in moist air covered with rust. Rust is [CDS]
A)
an element done
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B)
a compound done
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C)
a mixture of iron and dust done
clear
D)
a mixture of iron, oxygen and water done
clear
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question_answer47)
What is the term used to denote the critical temperature at which the air becomes saturated with vapour and below which the condensation is likely to begin? [NDA]
A)
Condensation point done
clear
B)
Evaporation point done
clear
C)
Dew point done
clear
D)
Point of critical temperature done
clear
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question_answer48)
Tails of comets are visible due to
A)
Tyndall Effect done
clear
B)
Reflection done
clear
C)
Brownian movement done
clear
D)
None of these done
clear
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question_answer49)
The process used to separate oil and water is
A)
distillation done
clear
B)
sublimation done
clear
C)
separating funnel done
clear
D)
chromatography done
clear
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question_answer50)
Amalgam is a solution of
A)
solid in solid done
clear
B)
solid in liquid done
clear
C)
liquid in solid done
clear
D)
liquid in liquid done
clear
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question_answer51)
Which one of the following is correct? Butter is [CDS]
A)
a super cooled oil done
clear
B)
an emulsion done
clear
C)
a molecular solid done
clear
D)
None of these done
clear
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question_answer52)
Which one of the following petroleum refinery products has the lowest boiling point? [CDS]
A)
Kerosene done
clear
B)
Diesel done
clear
C)
Gasoline done
clear
D)
Lubricating oil done
clear
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question_answer53)
Which one of the following is not a mixture? [CDS]
A)
Toot paste done
clear
B)
Toilet soap done
clear
C)
Baking soda done
clear
D)
Vinegar done
clear
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question_answer54)
Iodised salt is a [CDS]
A)
mixture of potassium iodide and common salt done
clear
B)
mixture of molecular iodide and common salt done
clear
C)
compound formed by combination of potassium iodide and common salt done
clear
D)
compound formed by molecular iodine and common salt done
clear
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question_answer55)
At NTP, the least volume will be occupied by 15 g of which one of the following? [NDA]
A)
\[N{{H}_{3}}\] done
clear
B)
\[{{O}_{2}}\] done
clear
C)
\[{{N}_{2}}\] done
clear
D)
Ne done
clear
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question_answer56)
What is the weight of one atom of Hydrogen in grams? [NDA]
A)
\[6.23\times {{10}^{-23}}\] done
clear
B)
\[1.66\times {{10}^{-24}}\] done
clear
C)
\[6.62\times {{10}^{-24}}\] done
clear
D)
None of these done
clear
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question_answer57)
Which one of the following elements shows variable equivalent mass? [NDA]
A)
Zinc done
clear
B)
Silver done
clear
C)
Calcium done
clear
D)
Iron done
clear
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question_answer58)
The atomic weights are expressed in terms of atomic mass unit. Which one of the following is used as a standard? [NDA]
A)
\[^{\text{1}}{{\text{H}}_{\text{1}}}\] done
clear
B)
\[^{\text{12}}{{C}_{6}}\] done
clear
C)
\[^{\text{16}}{{O}_{8}}\] done
clear
D)
\[^{35}C{{I}_{17}}\] done
clear
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question_answer59)
Which one of the following mixtures is homogeneous? [NDA]
A)
Starch and sugar done
clear
B)
Methanol and water done
clear
C)
Graphite and charcoal done
clear
D)
Calcium carbonate and calcium bicarbonate done
clear
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question_answer60)
In which one of the following situations a chemical reaction does not occur? [NDA]
A)
Common salt is exposed to air done
clear
B)
Coal is burnt in air done
clear
C)
Sodium is placed in water done
clear
D)
Iron is kept in moist air done
clear
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question_answer61)
Which of the following is the best example of the law of conservation of mass? [NDA]
A)
When 12 gm. of carbon is heated in vacuum, there is no change in mass done
clear
B)
Weight of platinum wire is the same before and after heating done
clear
C)
A sample of air increases in volume when heated at constant pressure but mass remains unchanged done
clear
D)
12 gm. of carbon combines with 32 gm. Of oxygen to, give 44 gm. of carbon dioxide. done
clear
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