General Science Mcqs for PPSC/PMS/CSS/ KPSC/SPSC/UPSC/ and other exams...
1 Triglycerides are easily hydrolyzed by enzymes
called
Lipases
2 A “breath test” used by traffic police to check
drunken driving uses
Potassium
dichromatic-sulphuric
acid
3 What is the chemical name of the compound copper i carbonate
4 The nitrogenous base different in RNA as
compared to DNA is
Thymine
5 Nucleic acids were first demonstrated in Pus cells
6 Purines and pyrimidine’s are Nitrogenous bases
7 Enzyme proved useful in cancer treatment is L-asparaginase
8 The rate of enzymatic reaction is directly
proportional to concentration of
Substrate
9 Enzymes that catalyze the transfer of groups
within a molecule are called
Isomerases
10 Milk is a poor source of Vitamin C
1 In H-bomb, which reaction take place Fusion of deuterium
into Helium
2 Which reaction take place in atomic bomb Fission reaction
3 Which reaction take place in sun Fusion of deuterium
into Helium
4 What are standard unit of radioactivity Curie, 1curie=3.7x1010
disintegrations per
second
5 What are SI unit of radioactivity Becquerel
1Curie=3.7x1010Bq
6 Which rays have higher penetrating power Gamma rays
7 What is charge on alpha rays Positive
8 What is charge on beta rays Negative
9 What is charge on gamma rays No charge
10 What is charge on X rays No charge
11 Who discovered the phenomenon of radioactivity H. Becquerel in 1898
12 Who discovered nuclear fission Otto Hahn in 1938
1 Part of sphere responsible for mass transfer Atmosphere and
Hydrosphere
2 There are how many layers of atmosphere Four layers
(Thermosphere,
Mesosphere,
Stratosphere and
Troposphere)
3 Troposphere extended from 0-12km
4 Stratosphere extended from 12-50km
5 Mesosphere is extended from 50-85km
6 Thermosphere extended from 85-120km
7 Which gases causes acid rain NO2 and SO2
8 Why the sky appears completely black when
viewed from the moon.
Because moon has no
atmosphere
9 Rarest element on earth is Astatine
10 A glass often crack when hot water is poured over
it due to
Expansion of inner
surface
11 How much sodium Chloride is present in average
adult human body
250g
12 Solid carbon dioxide is called dry ice. It exist at
temperature
-800
C
GK (Planets with sequence)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
(M – VEM – J - SUN).
1 Whose is regarded as father of modern Chemistry Lavoisier
2 Which substance is used to produce artificial rain Silver Iodide
3 Human bone does not contain a)Ca b)C c)Oxygen
d)Phosphorous
Oxygen
4 Oil of vitriol is Sulphuric Acid
5 Bleaching action of Chlorine is ____ reaction. Decomposition
6 The hottest part of the gas flame is known as Non-luminous zone
7 The method of concentrating the ore which
makes use of the difference in density between
ore and impurities is called
Levigation
8 The first metal use by man was Copper
9 From which mineral is radium obtained Pitchblende
10 The main active constituent of tea and coffee is Caffeine
GK (UNO)
Permanent members of UNO are France, America, Britain,
Russia and China (FABRiC)
1 Which of the following is used in beauty parlors
for hair setting
Sulphur
2 The most Malleable metal is Gold
3 The metal that is usually extracted from sea
water is
Mg
4 Gobar gas contains mainly Methane
5 Which of the following is non-metal that remains
liquid in room temperature
Bromine
6 The human body is made up of several chemical
elements; the element present in the highest
proportion (65%) in the body is
Oxygen
7 In with activities Silicon Carbide is usually used? Cutting very hard
substances
8 The most abundant d-block metal is Fe
9 The most abundant s-block metal is Ca
10 The first man made element is Technicium Tc-43
GK (General Science)
Atomic particle discovered by
Ruther ford Thomas Chadwick
Proton Electron Newton
1 Element kept in water Phosphorous
2 Elements kept in Kerosene 1A group elements
(except Li)
3 Hardest naturally occurring element is Diamond
4 Poorest conductor of electricity is Diamond
5 Metal showing highest oxidation state Os (+8)
6 Which are the non-metals having metallic luster Graphite and Iodine
7 Most poisonous element Pu (Plutonium)
8 Best electricity conductor among non-metals Graphite
9 Best electricity conductor among metals Ag
10 Examples of Amphoteric oxides are Oxides of Be, Al, Zn,
Pb, Sn, Sb and As
GK (History)
The four war won by Babur, order is Panipat(1526),
Khanwa(1527), Chander(1528) and Skirt(1529). (PK CS)
1 Total number of radioactive elements in periodic
table are
25
2 Rarest element on earth At (astatine)
3 Most stable carbonate is Cs2CO3
4 Strongest alkali is CsOH
5 Total number of gaseous elements in periodic
table is
11 (H, N, O, F, Cl, He,
Ne, Ar, Kr, Xe, Rn)
6 Group containing maximum no. of gaseous
elements in periodic table
Zero group
7 Total number of liquid elements in periodic table
(at 300
C)
6 (Br, Hg, Cs, Fr, Ga
and Uub)
8 Liquid element of radioactive nature (at 300
C) Fr
9 Color of fluorescence produced by cathode rays
depends upon
Composition of gas
10 The atomic number of an element having
maximum number of unpaired electrons in p-
subshell is
7
GK (International)
Trick to remember Currency “DOLLAR” (A NeLi CaFi TEA)
A=America, Ne=New Zealand, Li=Liberia, Ca=Canada, Fi=Fiji,
T=Taiwan, E=Ethiopia and A=Australia.
1 In Chromatography, the stationary phase can be Solid or liquid
2 In chromatography, the mobile phase can be Liquid or gas
3 Gas chromatography can be performed in which
way
Only columns
4 In reverse phase chromatography, the stationary
phase is made of
Non-polar
5 In chromatography, locating agent used for
locating of amino acids is
Ninhydrine
6 The term Chromatography was coined by Mikhail Tsvet in 1900
7 Which technique is used for separation of volatile
components
GC (Gass
Chromatography)
8 Gases usually used as carrier gas in GC Inert Gases like noble
gases, N2 etc
9 Which gas is not used as carrier gas in GC CO2
10 Which technique is used to separate the colored
pigments from plants?
Chromatography
GK (International)
Trick to remember Currency “DINAR” (KS in JAIL) K=Kuwait,
S=Sudan, J=Jorden, A=Algenria, I=Iraq and L=Libya.
1 Which of the following decays represents the
decay of Uranium-238 to thorium-234
Alpha decay
(emission of helium
nucleus)
2 Which of the following material is used to make
control rods in a nuclear reactor
Indium, Boron, silver
or cadmium
3 What is the Gibbs Energy of a cell -nFE
4 Who discovered Nitrogen? Rutherford
5 What do we call the molar conductivity when the
concentration approaches zero
Limiting molar
conductivity
6 Which of the chemicals is used to dissolve the
soap to make a transparent soap?
Ethanol
7 Which is the most common variety of coal Bituminous
8 Which one of the following is also called as
stranger gas
Xenon
9 What is used as a sowing agent in the preparation
soft drinks?
Phosphoric acid
10 Why soaps do not work in hard water? Because Ca and Ma
form insoluble scum
in water with soap
GK (International)
Trick to remember Currency “EURO” (BIG FAN MISS P)
B=Belgium, I=Ireland, G=Germany, F=France, A=Austria,
N=Netherland, M=Malta, I=Italy, S=Spain, S=Slovenia and P=Portugal.
1 The relationship between standard cell potential
and free energy is given by
∆F
0
=-nF∆E
0
2 Ozone filter out radiation below 30000
A
3 The health effect caused by lead? Neuorozin
4 Acute toxicity is expressed by the term LD50
5 The smog is essentially caused by the presence of Oxides of sulphur and
nitrogen
6 The Carbon dioxide content in atmosphere is 0.034/%
7 Photo chemical smog is caused primarily by NO2
8 For an average exposure of 8 hours per day, the
maximum permissible concentration limit of CO in
the atmosphere is
50ppm
9 Solar energy, mainly light originates from sun due
to
Displacement
reaction
10 Which particle is the most essential component to
continue the chain reaction during uranium
fission?
Neutron
GK (International)
Trick to Remember Currency “PESO” (MAC CPU) M=Mexico,,
A=Argentina, C=Chile, C=Columbia, P=Philippines and U=Uruguay