Question

Give some science quiz for class 11,12 ..

Answer 1

Hey mate !
Please mark this answer brainliest and reoccupy your used points .


1. Who is honored as Father of Modern Chemistry?
Antoine Lavoisier




2. Who invented periodic table?
Dmitri Mendeleev




3. Which is the most abundant gas in the earth's atmosphere?
Nitrogen (78.08%)




4. Which gas evolved from paddy fields and marshes?
Methane




5. Which toxic element present in automobile exhausts?
Lead




6. Which gases cause acid rain?
Sulphur dioxide, Nitrogen oxides




7. Which metal is used in the making of microchips?
Silicon




8. What is the toxicity caused by silicon called?
Silicosis




9. Which polymer is used to manufacture electric switches, computer disks etc.?
Bakelite




10. With which polymer, the cabinets of radio and TV made of?
Polystyrene




11. Which chemical is used to make rain coats?
Poly Vinyl Chloride(PVC)




12. Which type of plastics can be recycled?
Thermoplastics




13. What is the name given to plastics that cannot be recycled?
Thermosetting plastics




14. Which element is a liquid at ordinary temperature?
Mercury




15. What is the chemical name of baking soda?
Sodium bicarbonate




16. What is sodium carbonate commonly known as?
Washing soda or soda ash




17. What is sodium chloride?
Table salt




18 What is table sugar?
Cane sugar (Sucrose)




19. What is the element present on lead pencils?
Carbon (graphite)




20. Which gas is found in soda water?
Carbon dioxide

Answer 2

Question 1: Potassium Permanganate is used for purifying drinking water, because

1.    It is a sterilising agent

2.    It dissolves the impurities of water

3.    It is a reducing agent

4.    It is an oxidising agent

Answer: 4


Question 2:   Which of the following is an element?

1.    Ruby

2.    Sapphire

3.    Emerald

4.    Diamond

Answer: 4


Question 3:’Anemophily’ is pollination by :

1.    Birds

2.    Wind

3.    Ants

4.    Bats

Answer: 2


Question 4:The nutritional supplements Spirulina, Chorella and the Vitamin-C supplement, Dunaliella are actually:

1.    Algae

2.    Lichens

3.    Probiotics

4.    Bryophytes

Answer: 1

Question 5: Which of the following rays are more penetrating?

1.    Beta rays

2.    Alpha rays

3.    Gamma rays

4.    X-rays

Answer: 3

Question 6: How many colours the sunlight spectrum has?

1.    Three

2.    Seven

3.    Four

4.    Five

Answer: 2


Question 7:Which of the following is commonly called a 'polyamide'?

1.    Terylene

2.    Nylon

3.    Rayon

4.    Orlon

Answer: 2


Question 8:Epoxy resins are used as

1.    Detergents

2.    Insecticides

3.    Adhesives

4.    Moth repellents

Answer: 3


Question 9:Detergents used for cleaning clothes and utensils contain?

1.    Bicarbonates

2.    Bismuthates

3.    Sulphonates

4.    Nitrates

Answer: 3


Question 10: Sodium metal is kept under

1.    Petrol

2.    Alcohol

3.    Kerosene

4.    Water

Answer: 3


Question 11: Which of the following are the ingredients of gun metal?

1.    Iron, Zinc, Titanium

2.    Iron, tin

3.    Iron, Brass, Tin

4.    Copper, Tin

Answer: 4


Question 12: From which mineral is radium obtained?

1.    Pitchblende

2.    Rutile

3.    Haematite

4.    Limestone

Answer: 1


Question 13: The variety of coal in which the deposit contains recognizable traces of the original plant material is

1.    Bitumen 

2.    Peat 

3.    Anthracite 

4.    Lignite 

Answer: 2


Question 14: Tetraethyl lead is used as

1.    Pain killer 

2.    Fire extinguisher 

3.    Mosquito repellent 

4.    Petrol additive 

Answer: 4


Question 15: Which of the following is used as a lubricant?

1.    Graphite 

2.    Silica 

3.    Iron Oxide 

4.    Diamond 

Answer: 1


Question 16:The age of most ancient geological formations is estimated by

1.    Ra - Si method

2.    Potassium - argon method

3.    C14 method

4.    Uranium - lead method

Answer: 4


Question 17:Who suggested that most of the mass of the atom is located in the nucleus?

1.    Thompson

2.    Bohr

3.    Rutherford

4.    Einstein

Answer: 3


Question 18:One kilometre is equal to how many miles?

1.    0.84

2.    0.5

3.    1.6

4.    0.62

Answer: 4


Question 19:Kilohertz is a unit which measures

1.    Power used by a current of one ampere

2.    Electromagnetic radio wave frequencies

3.    Voltage

4.    Electric resistance

Answer: 2


Question 20:One horse power is equal to

1.    746 watts

2.    748 watts

3.    756 watts

4.    736 watts

Answer: 1