1. With the help of which particle did Rutherford test the scattering?
α \alpha α
β \beta β
γ \gamma γ
X-ray
2. Which mixture is vinegar?
H2SO4+K2Cr2O7 \mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} H2SO4+K2Cr2O7
CH3COOH+H2O \mathrm{CH}_{3} \mathrm{COOH}+\mathrm{H}_{2} \mathrm{O} CH3COOH+H2O
HCl+CH3COOH \mathrm{HCl}+\mathrm{CH}_{3} \mathrm{COOH} HCl+CH3COOH
CH3COOH+H2SO4 \mathrm{CH}_{3} \mathrm{COOH}+\mathrm{H}_{2} \mathrm{SO}_{4} CH3COOH+H2SO4
3. What is the pOH \mathrm{pOH} pOH of pure water?
14
7
1.4
0.7
4. Which is strongest acid?
HNO2 \mathrm{HNO}_{2} HNO2
HNO3 \mathrm{HNO}_{3} HNO3
H2SO3 \mathrm{H}_{2} \mathrm{SO}_{3} H2SO3
H2SO4 \mathrm{H}_{2} \mathrm{SO}_{4} H2SO4
5. Which is the correct order of lonization potential?
N>O>F \mathrm{N}>\mathrm{O}>\mathrm{F} N>O>F
F<Cl<Br \mathrm{F}<\mathrm{Cl}<\mathrm{Br} F<Cl<Br
K<N<Li \mathrm{K}<\mathrm{N}<\mathrm{Li} K<N<Li
Be>Mg>C \mathrm{Be}>\mathrm{Mg}>\mathrm{C} Be>Mg>C