Q1. Washing Soda is the common name of?
Ans: *Sodium Carbonate*
Q2. The Chemical Name of Laughing gas is?
Ans: *Nitrous Oxide*
Q3. The Cell discovered by?
Ans. *Robert Hook in 1665*
Q4. The Nucleus is discovered by?
Ans. *Robert Brown in 1831*
Q5. The Microscope was discovered by?
Ans. *Galileo in 1610*
Q6. Ball Pen Invented by?
Ans. *Amrican Scientist Jan Lowd in 1888*
Q7. Mercury is also known as?
Ans. *Quick Silver*
Q8. How many Legs do butterflies have?
Ans. *6 legs and 2 pair of wings*
Q9. The Heart of a Normal adult human being weight about?
Ans. *300 grams*
Q10. What is the average adult pluse rate?
Ans. *72 - 80*
Q11. The Cow's milk contains how much amount of water in terms of percentage?
Ans. *80%*
Q12. Instrument to detect the purity of Milk is?
Ans. *Lactometer*
Q13. Radioactivity was First Discovered by?
Ans. *Madam Curry*
Q14. Which gas is commonly used in balloons and airships?
Ans. *Hydrogen*
Q15. Which gas is used in the preparation of soft drinks?
Ans. *Carbon dioxide*
Q16. In blood 'the percentage of water is?
Ans. *90%*
Q17. The volume percentage of Nitrogen in air is?
Ans. *78%*
Q18. Air contains volume of carbon dioxide?
Ans. *0.03%*
Q19. For water purification we use?
Ans. *Chlorine*
Q20. The human blood is devided into?
Ans. *4 groups*
Q21. A Man can Survive without food?
Ans. *One month*
Q22 The muscles, tissues, and blood all are made up of?
Ans. *Proteins*
Q23. What does make the blood look red?
Ans. *Hemoglobin*
Q24. The acid used in a Car battery is?
Ans. *Sulphric Acid*
Q25. The major part of natural gas 'petroleum and coal' consist of?
Ans. *Methane*
Q26. The speed of sound is?
Ans. *340 metre per second*
Q27. During sleep a man's blood pressure?
Ans. *Fluctuates*
Q28. The smallest plants on the earth are?
Ans. *Algae*
Q29. Who invented the polio vaccine (oral)?
Ans. *Albert Sabin*
Q30. Total volume of blood in a normal human being?
Ans. *5-6 liters*
Q31. Red Blood Corpuscles are formed in the?
Ans. *Bone Marrow*
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