Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
According to which one of the following laws it is indicated that when two or more gases react with one another, their volumes bear a simple ratio?
Law of mass action
Law of multiple proportions
Law of reciprocal proportions
Law of combining volumes
Dry ice is used for making cold-baths in laboratories by mixing with volatile organic solvents. Identify the form of dry ice from the following.
Gaseous carbon dioxide
Liquid carbon dioxide
Solid carbon dioxide
Solid hydrogen oxide
Acid turns blue litmus red and base turns red litmus blue. A student tested a liquid with a red litmus paper which remained red no change.This shows that the liquid
is not a base
is not an acid
is neither an acid nor a base
must be pure water or acid
Arrange the following bases in increasing order of their basic strength:
1. Sodium hydroxide
2. Magnesium hydroxide
3. Aluminium hydroxide
4. Ammonium hydroxide
Select the CORRECT answer using the Code glVen below:
Codes :
4 2 1 3
4 1 2 3
4-3-2-1
1-2-3 -4
Which one of the following statements is incorrect about soaps?
Soaps are biodegradable
Soaps are sodium salts of higher fatty acids
Soaps can be used in acidic solutions
Soaps are prepared from natural oils and fats
