Match column A and column B and choose the right code : Column AColumn B1. Addition reaction(a) c Ca ( s )+2 H _2 O ( l ) Ca ( OH )_2( aq )+ H _2(g) 2. Decomposition reaction(b) C ( s )+ O _2(g) CO _2(g)3. Displacement reaction(c) r 2 H _2 O (l) 2 H _2(g)+ O _2(g) 4. Disproportionation reaction(d) 2 H _2 O _2( aq ) & 2 H _2 O ( l ) & + O _2(g)

(1) (b), (2) (c), (3) (a), (4).(d)

Match column A and column B and choose the right code : Column AC…

Match column A and column B and choose the right code :

Column A	Column B
1. Oxidation number of S in $H _2 SO _5$.	(a) Always integer
2. Bleaching powder	(b) Equivalent weight $=$ Molecular weight
3. In $FeSO _4 \cdot 7 H _2 O$	(c) $CaOCl _2$
4. Valency	(d) $+6$

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Column A	Column B
(1) Enthalpy of solution	(a) irreversible process
(2) Volume	(b) decrease in entropy
(3) Spontaneous process	(c) hydration enthalpy/ salvation enthalpy
(4) Crystallisation of sugar from solution	(d) Extensive property

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Column A	Column B
(1) Acidity	(a) Velocity per second
(2) Acceleration	(b) Heterogenous mixture
(3) Mixture of iron filling and sulphur powder	(c) Chemical properties
(4) Diamond	(d) Elements

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Column A	Column B
(1) Eka-aluminium	(a) Cs (Caesium)
(2) Maximum metallic property table	(b) Ionic property
(3) Penetrating power of orbitals	(c) Ga (Gallium)
(4) $NaCl > MgCl _2$	(d) More ionisation enthalpy

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Match the column A with column B and select the correct code.

Column A	Column B
1. $sp ^3$ saturated carbon	(a) HCHO
2. Trigonal planar geometry	(b) $\square$
3. Cyclobutane	(c) $CH _3- Cl$
4. Unsaturated alicyclic compound	(d) Cyclobutene

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Match the column A with column B and select the correct code.

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Column A	Column B
(1) $s p^2$ hybridisation	(a) $BeCl _2$
(2) $s p^3$ hybridisation	(b) $\stackrel{\oplus}{ C } H _3$
(3) $Rb _2 O$	(c) $\stackrel{+}{ N } H _4$
(4) 50/s-character compound	(d) Oxide having more basic property

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Column A	Column B
(1) For isothermal reversible process	(a) calculation of combustion energy
(2) Entropy change at equilibrium	(b) $\begin{array}{l} W _{ rev }=-2303 nRT \\ \log \frac{ V _{ f }}{ V _{ i }}\end{array}$
(3) Ideal process	(c) $\Delta S =0$
(4) Bomb calorimeter	(d) reversible process

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Column A	Column B
(1) Solution of $CH _3 COONH _4$	(a) Salt formed by weak acid and weak base
(2) $NH _4 Cl$	(b) $pH =7$
(3) $NH _4 OH + NH _4 Cl$	(c) $Kh =\frac{ K _{ w }}{ K _{ b }}$
(4) $\left( NH _4\right)_2 CO _3$	(d) Basic buffer

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Match column A and B and choose correct code :

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Column A	Column B
1. Addition reaction	(a) $\begin{array}{c} Ca ( s )+2 H _2 O ( l ) \longrightarrow Ca ( OH )_2( aq )+ H _2(g)\end{array}$
2. Decomposition reaction	(b) $C ( s )+ O _2(g) \longrightarrow CO _2(g)$
3. Displacement reaction	(c) $\begin{array}{r}2 H _2 O (l) \longrightarrow 2 H _2(g)+ O _2(g)\end{array}$
4. Disproportionation reaction	(d) $\begin{aligned} 2 H _2 O _2( aq ) \longrightarrow & 2 H _2 O ( l ) & + O _2(g)\end{aligned}$