ঢাকা বিশ্ববিদ্যালয়

  X-ray

  UV

  $\gamma$-ray

  infra-red

  As a fuel

  For synthesis of $N{H}_3$

  As a coolant

  None of the above

  $H_{2}O$

  $AlC{l}_3$

  $N{H}_4$

  $C{H}_3$

  RMgX

  HCN

  $C{H}_{3}Cl$

  $H_{2}C{O}_3$

  $\frac{H_3{N}^{+}-CH-COOH}{{|}_R}$

  $H_{2}N-CH-CO{O}_{{|}_R}$

  $R-CH-{C_{|+NH}}^{|{|}^O-O}$

  $H_{2}N-C{H}_{{|}_R}-COOH$

  2

  3

  4

  None

  $C{H}_{3}COOH+C_2{H}_{5}OH$

  $C{H}_{3}C{H}_{2}COOH+C{H}_{3}OH$

  $C{H}_{3}COONa+C{H}_{3}OH$

  $C{H}_{3}COONa+C_2{H}_{5}OH$

  $2C\left(s\right)+O_2\left(g\right)\to 2CO\left(g\right)$

  $2H_{2}S\left(g\right)+S{O}_2\left(g\right)\to 3S\left(s\right)+2H_{2}O\left(g\right)$

  $4Fe\left(s\right)+3O_2\left(g\right)\to 2F{e}_2{O}_3\left(s\right)$

  $CO\left(g\right)+3H_2\left(g\right)\to C{H}_{3}OH\left(l\right)$

  Two mutually perpendicular orbitals

  Two orbitals at $180°$

  Four orbitals directed tetrahedrally

  Three orbitals in a plane

  28

  30

  32

  34

  2,1,0

  2,1,(-1,0,1)

  2,2,(-2,-1,0,1,2)

  1,1,0

  2

  12

  10

  14

  $\alpha$-particle

  $\beta$ particle

  $\gamma$ -ray

  Neutron

  Increase

  Decrease

  Remain same

  None of these

  Most probable speed is the speed of all of the molecules

  Most probable speed decreases as temperature increases

  Larger number of molecules move at a greater speed at high temperature

  Distribution curve tells the number of molecules moving at a certain speed.

  1- bromopropane

  2- bromopropane

  1, 2 dibromopropane

  2- bromopropene

  a = 2 , b =3 , c = 2, and d = 3

  a = 4 , b =7 , c =4 and d = 4

  a = 4 , b = 5 , c = 4 , and d = 6

  a = 6 , b = 7, c = 6 , and d = 9

  $BaC{l}_2\left(aq\right)+H_{2}S{O}_4\left(aq\right)\to BaS{O}_4\left(s\right)+HCl\left(aq\right)$

  $B{a}^{2+}\left(aq\right)+S{O}_4\left(aq\right)\to BaS{O}_4\left(s\right)$

  $B{a}^{2+}\left(aq\right)+2S{O}_4\left(aq\right)\to Ba\left(S{O}_4{)}_2\right(s)$

  $B{a}^{2+}\left(aq\right)+S{O_4}^{2-}\left(aq\right)\to BaSo4\left(s\right)$

  AgF

  AgCl

  AgBr

  Agl

  2 times

  4 times

  6 times

  8 times

  Isomer

  Isotone

  Isobar

  Isotope

  Benzene

  Cyclohexane

  Toluene

  Chlorobenzene

  96% ethanol

  6 - 10 % ethanoic acid

  30% $H_2{O}_2$

  40% aqueous solution of formaldehyde

  Sucrose

  Glucose

  Fructose

  Maltose

  0.5 mole at cathode

  0.5 mole at anode

  2 mole at anode

  2 mode at cathode

  $2H_2{O}_2\to 2H_{2}O+O_2$

  $C{O}_2+C\to 2CO$

  $CaC{O}_3\to CaO+C{O}_2$

  $F{e}_2{O}_3+3CO\to 2Fe+3C{O}_2$

  NaCl

  KCl

  RbCl

  NaBr

  $C{H}_{3}OOH$

  $C{l}_{2}CHCOOH$

  $ClC{H}_{2}COOH$

  $C_6{H}_{6}COOH$

  Molality of the solvent

  Osmotic pressure of the solute

  Molarity of the solvent

  Mole fraction of the solvent