
Aluminium window frames do not corrode away because the aluminium is:

Important Questions on Chemistry




Human nails are made up of:
1. Pigment
2. Elastin
3. Albumin
4. Keratin


Between small and large human intestine which one is longer?
1. Small intestine
2. Large intestine
3. Both are equal in length
4. Depends on male or female

A particle in the medium completes 40 vibrations in 2.5 s. The frequency of the wave is ____:

Which of the following is not a bleaching agent?
1. Sodium hypochlorite
2. Calcium hypochlorite
3. Hydrogen peroxide
4. Hydrogen sulphide




How many moles of sulphuric acid are present in 25 gm?



Which of the following non-metal conducts electricity?
(A) Lead
(B) Wood charcoal
(C) Coal
(D) Diamond


Pressure is measured terms of:
1. Mass and Density
2. Work Done
3. Force and Area
4. Force and Distance

The instrument used to regulate temperature to a particular degree is called:
1. Thermostat
2. Thermometer
3. Pyrometer
4. Thermocouple


