Collection of verified questions for Adhatuyen under General Science. Includes previous year exam questions with official answer keys and step-by-step solutions.
Which of the following gases has the lowest percentage (by volume) in the atmosphere?
Which gas is mixed with oxygen for breathing by divers in deep sea?
Which of the following gases is used for filling aeroplane tyres?
Helium is preferred over hydrogen in balloons because:
Denitrification (release of nitrogen) results in:
Antacids are:
The chemical used to eliminate fungi/algae in water tanks is:
Which of the following has a pH value of 7?
Which of the following remains in a solid state at normal room temperature?
Oxygen is absent in:
Blue Vitriol is chemically:
Deep-sea divers use which one of the following gas mixtures?
Tear gas is/contains:
The laughing gas used as an anaesthetic by doctors is:
The halogen which is used as an analgesic/sedative is:
A tube light is filled with:
Water can dissolve more substances than any other liquid because:
Soda water prepared by passing carbon dioxide into water is:
Match List-I with List-II and select the correct answer using the code given below the lists: List-I List-II (A) Washing Soda 1. Sodium hydroxide (B) Caustic Soda 2. Copper sulphate (C) Blue Vitriol 3. Sodium thiosulphate (D) Hypo 4. Sodium carbonate Code:
Which of the following compounds is not a Lewis acid?
Which of the following is a possible pH value for an acidic solution?
Which gas is filled at low pressure in a tube light?
pH value indicates:
Assertion (A): To dilute sulphuric acid, acid is added to water and not water to acid. Reason (R): Water has a very high specific heat. Code:
Which of the following is known as laughing gas?