Grade 10 - Chemistry - Question Paper 3
Quiz by Rajiv Khombare
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- Q1
Group IIA elements are known as :
Alkaline earth metals
Halogens
Noble gases
Alkali metals
30s - Q2
Acid uses as an eyewash :
Oxalic acid
Formic acid
Acetic acid
Boric acid
30s - Q3
During electrolysis of sodium chloride the gas released at anode is:
None of these
Oxygen
Chlorine
Hydrogen
30s - Q4
Atomic mass of an element expressed in gram is called :
Gram atomic mass
Gram molecular mass
Molecular mass
Net atomic weight
30s - Q5
The most ionic compound of periodic table is :
Caesium chloride
Potassium chloride
Sodium chloride
Magnesium chloride
30s - Q6
An element used in atomic clocks :
Francium
Radon
Caesium
Rhodium
30s - Q7
"Negative LOGARITHM to the base 10 of the hydrogen ion concentration" is known as :
P-H
pH
pOH
Both pH and pOH
30s - Q8
Pure metal is made ...................... during electro refining
Anode
Cathode
None of these
Electrolyte
30s - Q9
Which of the following is not a hydra acid?
HCl
H2S
H2SO3
HBr
30s - Q10
22.4 litres is also called :
Special volume
Reduced volume
Net volume
Molar volume
30s - Q11
A compound which contains all the three types of bond i.e. ionic, covalent and co-ordinate is :
Ammonium chloride
Sodium chloride
Calcium chloride
Ammonia
30s - Q12
In second period, if we move from Li to F, there is regular decrease in :
Ionization energy
Electronegativity
Atomic mass
Atomic radius
30s - Q13
Covalent compounds have low melting point because :
Covalent molecules are held by weak intermolecular forces of attraction
Covalent bond is less exothermic
Covalent bond is weaker than ionic bond
Covalent molecules have definite shape
30s - Q14
The compound with strongest ionic bond is :
KCl
RbCl
MgO
NaCl
30s - Q15
The value of Avogadro's constant is
6.023 x 1022
60.23 x 1023
3.01 x 1023
6.023 x 1023
30s