· Which of the
following is a noble gas?
a) Oxygen
b) Nitrogen
c) Helium
d) Hydrogen
· The atomic number
of carbon is:
a) 6
b) 8
c) 12
d) 14
· What is the
chemical formula for water?
a) H2O
b) CO2
c) O2
d) H2O2
· Which element has
the highest electronegativity?
a) Oxygen
b) Nitrogen
c) Fluorine
d) Chlorine
· What is the main
component of natural gas?
a) Ethane
b) Methane
c) Propane
d) Butane
· Which of the
following is a strong acid?
a) HCl
b) CH3COOH
c) H2CO3
d) NH3
· What is the molar
mass of NaCl?
a) 35.5 g/mol
b) 58.5 g/mol
c) 75 g/mol
d) 95 g/mol
· The pH of a
neutral solution is:
a) 1
b) 7
c) 10
d) 14
· Which of the
following is an alkali metal?
a) Magnesium
b) Calcium
c) Sodium
d) Aluminum
· What type of bond
is formed between two chlorine atoms in a Cl2 molecule?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
· Which gas is
produced when hydrochloric acid reacts with zinc?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon dioxide
· The chemical
formula of sulfuric acid is:
a) H2SO3
b) H2SO4
c) H2CO3
d) H2S
· What is the
electron configuration of an oxygen atom?
a) 1s2 2s2 2p4
b) 1s2 2s2 2p6
c) 1s2 2s2 2p5
d) 1s2 2s2 3s2
· Which of the
following is a metalloid?
a) Iron
b) Silicon
c) Silver
d) Sodium
· What is the common
name for NaHCO3?
a) Baking powder
b) Baking soda
c) Washing soda
d) Bleach
· What is the
hybridization of the carbon atoms in ethene (C2H4)?
a) sp
b) sp2
c) sp3
d) dsp2
· Which of the
following solutions is the most acidic?
a) pH 1
b) pH 3
c) pH 7
d) pH 10
· What is the main
component of vinegar?
a) Citric acid
b) Acetic acid
c) Tartaric acid
d) Hydrochloric acid
· Which of the
following is an example of a chemical change?
a) Melting of ice
b) Boiling of water
c) Rusting of iron
d) Dissolving sugar in
water
· Which element is
represented by the symbol ‘K’?
a) Krypton
b) Potassium
c) Phosphorus
d) Calcium
· What is the
molecular geometry of methane (CH4)?
a) Trigonal planar
b) Linear
c) Tetrahedral
d) Bent
· The process of a
liquid changing to a gas is called:
a) Sublimation
b) Evaporation
c) Condensation
d) Deposition
· Which of the
following is a saturated hydrocarbon?
a) Ethene
b) Ethane
c) Ethyne
d) Benzene
· Which of the
following has the highest boiling point?
a) H2O
b) CO2
c) O2
d) N2
· Which type of
reaction is represented by the equation: AB→A+BAB rightarrow A + BAB→A+B?
a) Synthesis
b) Decomposition
c) Single displacement
d) Double displacement
· The term
“enthalpy” refers to:
a) Heat content of a
system at constant pressure
b) Disorder of a
system
c) Volume of a system
d) Pressure of a
system
· What is the charge
of an electron?
a) +1
b) -1
c) 0
d) +2
· Which of the
following is a transition metal?
a) Magnesium
b) Iron
c) Calcium
d) Potassium
· What is the
product of the reaction between an acid and a base?
a) Salt
b) Water
c) Carbon dioxide
d) Both a and b
· What is the
oxidation state of sulfur in H2SO4?
a) +2
b) +4
c) +6
d) -2
· Which of the following
elements is the most reactive non-metal?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
· What is the
empirical formula for glucose (C6H12O6)?
a) CHO
b) CH2O
c) C2H4O2
d) C6H12O6
· The rate of a
chemical reaction depends on:
a) Temperature
b) Concentration of
reactants
c) Surface area of
reactants
d) All of the above
· Which of the
following is not a property of metals?
a) High melting point
b) Good conductor of
electricity
c) Malleability
d) Brittle
· The compound with
the chemical formula NH3 is known as:
a) Nitric acid
b) Ammonia
c) Ammonium
d) Nitrite
· What is the name
of the process by which plants make their food using sunlight?
a) Respiration
b) Fermentation
c) Photosynthesis
d) Transpiration
· Which of the
following gases is commonly known as laughing gas?
a) Nitrogen dioxide
b) Nitrous oxide
c) Nitric oxide
d) Ammonia
· What is the
chemical name of table salt?
a) Sodium carbonate
b) Sodium bicarbonate
c) Sodium chloride
d) Sodium sulfate
· Which of the
following is a reducing agent?
a) Cl2
b) H2
c) O2
d) CO2
· What is the
chemical formula for calcium hydroxide?
a) Ca(OH)2
b) CaO
c) CaCO3
d) CaCl2
· Which of the
following processes involves the loss of electrons?
a) Oxidation
b) Reduction
c) Precipitation
d) Neutralization
· The principle that
states that energy cannot be created or destroyed is known as:
a) Conservation of
mass
b) Conservation of
energy
c) Entropy
d) Enthalpy
· Which element is
found in hemoglobin?
a) Copper
b) Iron
c) Magnesium
d) Zinc
· What type of
isomerism is exhibited by glucose and fructose?
a) Structural
isomerism
b) Geometric isomerism
c) Optical isomerism
d) Positional
isomerism
· Which of the
following is an endothermic process?
a) Combustion
b) Respiration
c) Melting of ice
d) Freezing of water
· The bond angle in
a water molecule is approximately:
a) 90°
b) 104.5°
c) 120°
d) 180°
· What is the name
of the process by which a gas changes directly to a solid?
a) Sublimation
b) Deposition
c) Condensation
d) Freezing
· Which of the
following is a diatomic molecule?
a) Neon
b) Argon
c) Nitrogen
d) Helium
· What is the main
constituent of air?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
· Which of the
following is a Lewis acid?
a) NH3
b) H2O
c) BF3
d) CH4
· Which law states
that the total pressure exerted by a mixture of gases is equal to the sum of
the partial pressures of individual gases?
a) Boyle’s Law
b) Charles’s Law
c) Avogadro’s Law
d) Dalton’s Law
· What is the
molecular formula of ethanol?
a) C2H6O
b) C2H4O2
c) CH3OH
d) C3H8O
· Which of the
following is a characteristic of a covalent bond?
a) High melting point
b) High electrical
conductivity
c) Sharing of
electrons
d) Formation of ions
· What is the common
name for the compound with the chemical formula NaOH?
a) Baking soda
b) Bleach
c) Lye
d) Vinegar
· Which element has
the highest atomic number?
a) Uranium
b) Lead
c) Gold
d) Mercury
· What is the main
ore of aluminum?
a) Hematite
b) Galena
c) Bauxite
d) Chalcopyrite
· Which of the
following is an example of an amphoteric substance?
a) HCl
b) NaOH
c) H2O
d) CO2
· What is the
oxidation state of chlorine in NaClO?
a) +1
b) +3
c) +5
d) +7
· Which of the
following is a noble gas?
a) Hydrogen
b) Oxygen
c) Argon
d) Nitrogen
· What type of bond
is present in sodium chloride (NaCl)?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
· Which of the
following is not an allotrope of carbon?
a) Diamond
b) Graphite
c) Buckminsterfullerene
d) Quartz
· What is the
coordination number of the central metal atom in [Fe(CN)6]4-?
a) 2
b) 4
c) 6
d) 8
· Which of the
following has a triple bond?
a) O2
b) N2
c) H2
d) Cl2
· The process of
converting a liquid into vapor is called:
a) Sublimation
b) Evaporation
c) Condensation
d) Deposition
· Which of the
following is a common reducing agent?
a) O2
b) Cl2
c) H2
d) CO2
· What is the
chemical formula for acetic acid?
a) CH3COOH
b) HCOOH
c) C2H5OH
d) CH3CH2OH
· Which of the
following is a polyatomic ion?
a) Na+
b) Cl-
c) NO3-
d) F-
· What is the
molecular geometry of CO2?
a) Trigonal planar
b) Tetrahedral
c) Linear
d) Bent
· Which of the
following is an example of an exothermic reaction?
a) Melting of ice
b) Photosynthesis
c) Combustion
d) Electrolysis of
water
· What is the
hybridization of the central atom in methane (CH4)?
a) sp
b) sp2
c) sp3
d) dsp2
· Which of the
following elements is a halogen?
a) Sodium
b) Magnesium
c) Chlorine
d) Argon
· What is the
empirical formula of benzene (C6H6)?
a) CH
b) CH2
c) C2H2
d) C3H3
· Which of the
following is a weak acid?
a) HCl
b) HNO3
c) H2SO4
d) CH3COOH
· What is the
chemical formula for potassium permanganate?
a) KMnO4
b) K2MnO4
c) K2Cr2O7
d) K2CrO4
· Which of the
following is a noble gas?
a) Nitrogen
b) Oxygen
c) Neon
d) Hydrogen
· What type of bond
is formed between two nitrogen atoms in an N2 molecule?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
· Which gas is
produced when sulfuric acid reacts with sodium carbonate?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon dioxide
· The chemical
formula of nitric acid is:
a) HNO2
b) HNO3
c) H2CO3
d) H2SO4
· What is the
electron configuration of a sodium atom?
a) 1s2 2s2 2p5
b) 1s2 2s2 2p6 3s1
c) 1s2 2s2 2p6 3s2
d) 1s2 2s2 2p6
· Which of the
following is an alkaline earth metal?
a) Potassium
b) Sodium
c) Magnesium
d) Aluminum
· What type of
reaction is represented by the equation: A+B→ABA + B rightarrow ABA+B→AB?
a) Synthesis
b) Decomposition
c) Single displacement
d) Double displacement
· The term
“entropy” refers to:
a) Heat content of a
system at constant pressure
b) Disorder of a
system
c) Volume of a system
d) Pressure of a
system
· What is the charge
of a proton?
a) +1
b) -1
c) 0
d) +2
· Which of the
following is a non-metal?
a) Iron
b) Magnesium
c) Chlorine
d) Sodium
· What is the
product of the reaction between a base and an acid?
a) Salt
b) Water
c) Carbon dioxide
d) Both a and b
· What is the
oxidation state of phosphorus in H3PO4?
a) +1
b) +3
c) +5
d) -3
· Which of the
following elements is the most reactive metal?
a) Lithium
b) Potassium
c) Sodium
d) Cesium
· What is the
empirical formula for hydrogen peroxide (H2O2)?
a) HO
b) H2O
c) H2O2
d) H3O
· The rate of a
chemical reaction depends on:
a) Temperature
b) Concentration of
reactants
c) Surface area of
reactants
d) All of the above
· Which of the
following is not a property of non-metals?
a) High melting point
b) Poor conductor of
electricity
c) Brittle
d) Low density
· The compound with
the chemical formula CH4 is known as:
a) Ethane
b) Methane
c) Propane
d) Butane
· What is the name
of the process by which plants release oxygen during photosynthesis?
a) Respiration
b) Fermentation
c) Transpiration
d) Photolysis
· Which of the
following gases is commonly known as a greenhouse gas?
a) Nitrogen
b) Oxygen
c) Carbon dioxide
d) Ammonia
· What is the
chemical name of chalk?
a) Calcium carbonate
b) Calcium bicarbonate
c) Calcium oxide
d) Calcium sulfate
· Which of the
following is an oxidizing agent?
a) Cl2
b) H2
c) CO2
d) CH4
· What is the
chemical formula for magnesium hydroxide?
a) Mg(OH)2
b) MgO
c) MgCO3
d) MgCl2
· Which of the
following processes involves the gain of electrons?
a) Oxidation
b) Reduction
c) Precipitation
d) Neutralization
· The principle that
states that matter cannot be created or destroyed is known as:
a) Conservation of
mass
b) Conservation of
energy
c) Entropy
d) Enthalpy
· Which element is
found in the active site of hemoglobin?
a) Copper
b) Iron
c) Magnesium
d) Zinc
· What type of
isomerism is exhibited by butane and isobutane? – a) Structural isomerism – b)
Geometric isomerism – c) Optical isomerism – d) Positional isomerism