Download App

Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds2 Marks
Question
Why have detergents replaced soap as a washing agent?
✓

Answer

Detergents are better cleansing agents than soaps because they do not form insoluble calcium and magnesium salts with hard water, and hence can be used for washing even with hard water.

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 "[2 Mark Questions]" from Carbon and its Compounds→Carbon and its Compounds — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.
  1. State one way in which the above two processes are similar.
  2. State two ways in which the above two processes differ.
→
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reasons for your answer.
→
Express the following facts in the form of a balanced chemical equation:“When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed”.
→
Can any source of energy be pollution free? Explain your answer with an example.
→
Consider the following food chains:
a. Plants $\rightarrow$ Mice $\rightarrow$ Snakes $\rightarrow$ Hawks
b. Plants $\rightarrow$ Mice $\rightarrow$ Hawks
If energy available at the producer level in both the food chains is 100J. In which case will hawks get more energy
and how much & Why?
→
100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?
→
When a 12V battery is connected across an unknown resistor, there is a current of 2.5mA in the circuit. Calculate the value of the resistance of the resistor.
→
What happens when an acid reacts with a metal? Give chemical equation of the reaction involved.
→
Which kind of mirror is used in the headlights of a car? Why is it used for this purpose?
→
When a solution becomes more acidic, pH gets lower.
→