11th chemistry english medium Refresher Course Module quiz one word questions 11ஆம் வகுப்பு வேதியியல் வினாடிவினா வினாக்கள்

11th chemistry english medium Refresher Course Module quiz one word questions 11ஆம் வகுப்பு வேதியியல் வினாடிவினா வினாக்கள்

1. What is the pH of lemon juice

5

2

1

7

Required

2. Which does not contain natural dyes?

Beetroot

Carrot

Turmaric

Potato

Required

3. What is the appearance of colloidal sol?

Translucent

Opaque

Transparent

Dark

Required

4. Which is the common oxidation State of Oxygen?

+2

-2

+1

-1

Required

5. which is not an oxidation?

Addition of oxygen

Loss of electrons

Removal of oxygen

Removal of hydrogen

Required

6. Which acid is present in tomato?

Tartaricacid

Citric acid

Malic acid

Oxalic acid

Required

7. Which is not a property of a base?

They react with acids to form salt and water

They have bitter taste

They are soapy to touch

They turn blue Litmus red

Required

8. Which metal is used for galvanizing

Al

Cu

Zn

Fe

Required

9. Which technique is used to separate Iodine from its impurities?

Evaporation

Distillation

Sublimation

Centrifugation

Required

10. How many water molecule are found in epsom salt

3

1

7

5

Required

11. Who discovered protons?

John Dalton

E Goldstein

JJ Thomson

sir James Chadwick

Required

12. Which type of Bond is present in alkynes?

Double bond

Single bond

Triple Bond

One single and one double bond

Required

13. What is the chemical formula of Rust

Fe

FeSiO₃

Fe₂O₃.XH₂O

FeO

Required

14. To which type of metal does calcium belong

Inner Transition metal

Transition metal

Alkali metal

Alkaline earth metal

Required

15. which is a polyatomic molecule?

O₃

S₈

He

H₂

Required

16. Which is an example for heterocyclic compound?

Cyclobutane

Propane

Furan

Benzene

Required

17. Which one of the following is a metalloid?

Pb

In

B

Ga

Required

18. If electronegativity difference is 2 then the bond is

More ionic

50 percentage ionic 50 percentage covalent

Co-ordinate

More covalent

Required

19. Which type of drug is Quinine?

Antipyretic

Antimalarial

Antibiotic

Antiseptic

Required

20. A reaction between an acid and a base is called

Reduction

Precipitation

Neutralization

Oxidation

Required

21. Name the acid present in aerated drinks?

Oxalic acid

Carbonic acid

Citric acid

Tartaric acid

Required

22. According to Fajan's rule covalency in ionic compounds is not maximum when

Charge of the Cation is small

Size of the cation is small

Size of the the anion is large

Charge of the anion is large

Required

23. Which is the radio isotope of hydrogen?

₁H¹

₁H³

₁H²

₁He²

Required

24. 1% iodoform is used as.

Antiseptic

Antipyretic

Antacid

Antimalarial

Required

25. What is the valency of of helium?

1

1/2

2

0

Required

26. Which is used as a standard for relative atomic mass?

C-11

C-12

H-1

C-10

Required

27. Which one of the following element is called transition elements?

f block

s block

d block

p block

Required

28. Identify a non aqueous solution

blue vitriol solution

sugar solution

tincture of Iodine

saline

Required

29. The solvent present in cloud is

Solid

Liquid

Colloid

Gas

Required

30. Photo decomposition reaction is caused by ------- energy

Mechanic

Heat

Electric

Light