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Section – III
CHEMISTRY

Q). What is the ratio of no. of moles of H₂ to H₂O in the balanced equation of this reaction?
H₂ + O₂ —> H₂O.
A) 1 : 1
B) 2 : 1
C) 1 : 2
D) 2 : 3

Q). The precipitate formed when silver nitrate solution reacts with sodium chloride solution is
A) NaOH
B) AgCl
C) Ag(OH)₂
D) None

Q). The atomic mass of Sodium is
A) 16 u
B) 23 u
C) 46 u
D) 63.5 u

Q). Gas/es evolved When sodium Carbonate reacts with hydrochloric acid.
A) Hydrogen
B) Chlorine
C) Carbon dioxide
D) All the above

Q). When a metal oxide reacts with an acid, the products formed are
A) Salt + Water
B) Salt
C) Base + Water
D) Only Water

Q). Which of the following is the salt of weak acid and strong base?
A) NaCl
B) CaSO₄
C) CH₃COONa
D) All the above

Q). On heating Gypsum at 373 K, we get
A) Calcium chloride
B) Plaster of paris
C) Calcium oxide
D) None of the above

Q). The maximum value of ‘l’ possible for n = 2
A) 1
B) 2
C) 3
D) 4

Q). The shape of d-orbital is
A) Spherical
B) Dumbell
C) Double-dumbell
D) Four folded dumbell

Q). The quantum number which gives the spin of electrons.
A) n
B) l
C) m
D) m_s