Question
Name three bases used in the laboratory with their formulae.

Answer

Bases which are mostly used in laboratory as below-
  • Sodium hydroxide $(\mathrm{NaOH})$
  • Calcium hydroxide $\left[\mathrm{Ca}(\mathrm{OH})_2\right]$
  • Ammonium hydroxide $\left(\mathrm{NH}_4 \mathrm{OH}\right)$

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

Similar questions

(i) Respiratory process occurs in two phases, what are those two major steps of respiration? Describe each one of them.
(ii) Define the term breathing rate.
Write the factors which affect the climate of a particular place.
What is sludge? Explain how it is treated.
Palak wants to be a great cyclist. She cycles daily for about $2$ hours followed by some exercises. Today, she thought she will cycle for longer and managed it for $41/2$ hours. Now she is feeling cramped up and her breathing is disturbed. Her mother took her to hospital where the doctor examined and told her not to push herself more than necessary. Palak understood and promised herself to move show and steadily.
  1. Why did Palak had cramps in her legs?
  2. Is breathing rate also affected after doing long hour of exercise. Why?
  3. When there is not enough oxygen supply, what happens to body and process of respiration? What values you learn from this?
During the summer vacations, Gaurav visited his native village. He observed that farmers were using pesticides in their field. He contacted the village head and explained him the effects of such substances in causing soil pollution. Next day, the village head called a meeting of all the villagers and convinced the villagers not to use chemicals and pesticides.
  1. Why is there a ban to demand the polythene bags and plastics.
  2. List some substances which pollute the soil.
  3. What are the values shown by Gaurav?
What is a bud? Which organism reproduce by budding? Give the diagrammatic representation of budding in an individual.
Write how the following seeds are dispersed?
(I) Seeds with wings
(II) Small and light seeds
(iii) Seeds with spines/hooks

You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/ basic/ neutral) of each solution.
Mention the different steps of nutrition in animals.
Explain the sea breeze and land breeze.