Science interview questions

Which among the following is a positively charged particle emitted by a radioactive element?

1. Alpha ray
2. Beta ray
3. Cathode ray
4. Gamma ray

Electron means _____

1. Amber
2. Atom
3. Charge
4. Potential

Which of the following was to be discovered first in the chromosphere of the sun?

1. Krypton
2. Helium    
3. Argon
4. Neon

Rayon is chemically

1. Pectin
2. Amylose  
3. Glucose
4. Cellulose

A substance which changes readily into vapour without heating is called

1. Effervescent  
2. Efflorescent
3. Volatile
4. Synthetic

The colour of an opaque object is due to the colour it

1. Refracts
2. Scatters
3. Reflects
4. Absorbs  

The filament of an electric bulb is made of

1. Nichrome
2. Tungsten  
3. Graphite
4. Iron

An example for solid foam is

1. Butter
2. Sponge
3. Milk
4. Mist

In which type of rocks are metals like gold and copper mostly found?

1. Old sedimentary
2. Old igneous
3. Old metamorphic
4. New metamorphic  

Which of the following is not an isotope of hydrogen?

1. Deuterium
2. Yttrium
3. Protium
4. Tritium

Medium wave broadcast is used for

1. National service
2. Regional service
3. International service
4. Overseas communication services 

The main constituents of pearl are

1. Calcium oxide and ammonium chloride
2. Ammonium sulphate and sodium carbonate 
3. Aragonite and conchiolin
4. Calcium carbonate and magnesium carbonate

Blood group of an individual is controlled by

1. Haemoglobin
2. Genes
3. Shape of RBC
4. Shape of WBC

In an ordinary dry cell, the electrolyte is

1. Sulphuric acid
2. Ammonium chloride
3. Manganese dioxide 
4. Zinc

The hardest substance available on earth is

1. Platinum
2. Gold
3. Coal
4. Diamond

Quartz crystals normally used in quartz clocks etc is chemically

1. Sodium silicate
2. Silicon dioxide
3. Carbon dioxide 
4. Germanium oxide

Boyle’s law is applicable at

1. Constant pressure but variable temperature 
2. Constant temperature
3. Constant temperature and pressure
4. Constant pressure

The tape of a tape recorder is coated with

1. Zinc oxide
2. Copper sulphate
3. Ferromagnetic powder 
4. Mica

In human body, the leg bones are

1. Fibula and Ulna
2. Humerus and Femur
3. Fibula and Tibia 
4. Tibia and Radius

Which one of the following animals stores water in intestine?

1. Camel
2. Moloch
3. Uromastix 
4. Zebra

Which of the following is an element?

1. Ruby
2. Emerald
3. Diamond
4. Sapphire 

The meter which is commonly used for servicing TV is known as

1. Multimeter
2. Frequency meter
3. Meggar
4. None of these

Of the metals which, one pollutes the air of a big city?

1. Copper
2. Cadmium
3. Chromium 
4. Lead

Which of the following metals remains in liquid form under normal conditions?

1. Zinc
2. Uranium  
3. Mercury
4. Radium

The gas used in different types of welding would include

1. Oxygen, acetylene and argon
2. Oxygen and acetylene
3. Oxygen, hydrogen, acetylene and nitrogen
4. Oxygen and hydrogen

Marsh gas is

1. Nitrogen 
2. Ethane
3. Hydrogen
4. Methane

The cell wall of Bacteria is made up of

1. Peptidoglycan
2. Proteins
3. Cellulose  
4. Chitin

The largest cell in the human body is

1. Nerve cell
2. Muscle cell 
3. Liver cell
4. Kidney cell

Armature of Dynamo is made with

1. Ferro magnetic material
2. Porcelain material  
3. Iron material
4. Cut material

Which of the following is a non metal that remains liquid at room temperature?

1. Helium
2. Bromine
3. Phosphorous 
4. Chlorine