Download App

Acids, Bases and Salts — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts2 Marks
Question
Separate the following into substances having pH values above and below 7. How do these influence litmus paper?
✓

Answer

Substances having pH values above 7: Solution of washing soda and toothpaste; They will turn red litmus paper blue due to their basic nature.
Substances having pH values less than 7: Lemon juice, vinegar and stomach juices; They will turn blue litmus paper red due to their acidic nature.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions: [2 M]" from Acids, Bases and Salts→Acids, Bases and Salts — all question types→Science STD 10 question papers→Maharashtra Board STD 10 question papers→Maharashtra Board question paper generator→

Similar questions

What are the advantages of having two eyes instead of just one?
→
Identify the exothermic and endothermic reactions :
i. $\quad HCl + NaOH \longrightarrow NaCl + H _2 O$ + heat
ii. $\quad 2 KClO _{3(s)} \xrightarrow{\triangle} 2 KCl _{( s )} 3 O _2 \uparrow$
iii. $CaO + H _2 O \longrightarrow Ca ( OH )_2+$ heat
iv. $\quad CaCO _{3(s)} \xrightarrow{\Delta} CaO _{( s )}+ CO _2 \uparrow$
→
What happens when a concentrated solution of sodium chloride (brine) is electrolysed? Write the equation of the reaction involved.
→
What do you understand by exothermic and endothermic reactions?
→
How much heat energy is necessary to raise the temperature of 5 kg of water from $20^{\circ} C$ to $100^{\circ} C$ ?
→
Body cavityGerm LayerPhylum
Absent_____________Porifera
AbsentTriploblastic_____________
Pseudocoelom_____________Aschelminthes
Present_____________Arthropoda
→
WRITE NOTES : Sperm Bank/Semen Bank.
→
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
→
Which of the above elements have the biggest and the smallest atom?
→
Why are the ‘danger signal’ lights red in colour?
→