ঢাকা বিশ্ববিদ্যালয়

সালঃ 2012

ক ইউনিট


Cl₂NaOH → NaOCl + NaCl+ H₂O

Fe + dill. H₂SO₄ → FeSO₄+H₂

CuSO₄+NH₄OH → Cu(OH)₂+(NH₄)₂SO₄

0.2M 10mL CH₃COOH + 0.1 M 10 mL NaOH

0.2M 10mL CHL + 0.1 M 10 mL NaOH

0.1M 10mL CH₃COOH + 0.2 M 10 mL NaOH

3-bromo-2chloro-5-methyl hexane

3-bromo-2chloro-5-ethyl hexane

2-chloro-3bromo-5-methyl hexane

brown, blue, white and pink

brown, pink, white and blue

brown, white, blue and pink

NH₃ and H₂O are conjugate pair

OH⁻ and H₂O are conjugate pair

OH⁻ is the conjugate base of acid H₂O

HCl(aq) + ½ Ca(OH)₂(aq) → ½ CaCl₂(aq)+H₂O(l)

2HCl(aq)+ Ca(OH)₂(aq) → CaCl₂(aq)+2H₂O(l)

H₂SO₄(aq) + Ca(OH)₂(aq) → CaSO₄(aq) + 2H₂O(l)

increase in the concentration of Ag+ ions

increase in the size of tin rod

increase in the concentration of SN₂+ ions

RightAns: 0 | WrongAns: 0 | Result: 0/0