Q. Movement of food through oesophagus is due to -
1) lubrication by saliva
2) peristalsis
3) gravitational pull
4) filtration
Q. The xylem in plants is responsible for -
1) transport of water
2) transport of food
3) transport of amino acids
4) transport of oxygen
Q. The kidneys in humans are a part of which of the following systems?
1) nutrition
2) respiration
3) excretion
4) transportation
Q. A segment of DNA providing information for a protein is called -
1) nucleus
2) chromosomes
3) trait
4) gene
Q. What percentage of genes does a child receive from its father?
1) 25%
2) 50%
3) 75%
4) 100%
Q. Biodegradable wastes can be employed to produce -
1) manure
2) biogas
3) both manure and biogas
4) Neither manure nor biogas
Q. The result of the ozone hole is -
1) Green house effect
2) Global warming
3) Acid rain
4) Increased UV radiation
Q. The most rapidly dwindling natural resource in the world is -
1) water
2) forest
3) wind
4) sunlight
Q. Which of the following is a greenhouse gas?
1) Sulphur dioxide
2) Nitrogen dioxide
3) Carbon dioxide
4) Carbon monoxide
Q. Who was the last Mughal emperor?
1) Babar
2) Humayun
3) Bahadur Shah Zafar
4) Aurangzeb
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