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Q.1 એક દ્રાવણ લાલ લિટમસને ભૂરું બનાવે છે તેની pH લગભગ હશે.
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Q.2 અપચાના ઉપચાર માટે નીચેના પૈકી કયા પ્રકારની દવાઓનો ઉપયોગ થાય છે?
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Q.3 એક દ્રાવણ ઇંડાના પીસેલા કવચ સાથે પ્રક્રિયા કરી વાયુ ઉત્પન્ન કરે છે, જે ચૂનાના પાણીને દૂધિયું બનાવે છે તો દ્રાવણ ધરાવે છે.
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Q.4 10 mL NaOHના દ્રાવણનું 8 mL આપેલ HClના દ્રાવણ વડે સંપૂર્ણ તટસ્થીકરણ થાય છે. જો આપણે તે જ NaOHનું 20 mL દ્રાવણ લઈએ, તો તેને તટસ્થ કરવા માટે HClના દ્રાવણની જરૂરી માત્રા કેટલી હશે?