All questions of Class 10 Chemistry for CTET & State TET Exam

• a)
  CaCO₃ → CaO + CO₂
• b)
  H₂ + Cl₂ → 2HCl
• c)
  H₂CO₃ → H₂O + CO₂
• d)
  2KClO₃ → 2KCl + 3O₂

• a)
  NaOH + HCl → NaCl + H₂O
• b)
  NH₄CNO → H₂NCONH₂
• c)
  2KClO₃ → 2KCl + 3O₂
• d)
  H₂ + I₂ → 2HI

• a)
  Combination reaction
• b)
  Oxidation reaction
• c)
  Exothermic reaction
• d)
  All of the above

• a)
  Red litmus solution
• b)
  Lime water
• c)
  A burning splinter
• d)
  Blue litmus solution

• a)
  Blue colour of the solution fades.
• b)
  Iron nails become brownish in colour.
• c)
  It is a displacement reaction.
• d)
  Blue colour of the solution does not  fades.

• A:

  A = 1, B = 1, C = 2, D = 1

• B:

  A = 2, B = 2, C = 2, D = 1

• C:

  A = 2, B = 1, C = 2, D = 1

• D:

  none of these

The answer is b.

• a)
  CaCO₃ → CaO + CO₂
• b)
  CaO + 2HCl → CaCl₂ + H₂O
• c)
  Fe + CuSO₄ → FeSO₄ + Cu
• d)
  NaOH + HCl → NaCl + H₂O

• a)
  C
• b)
  O
• c)
  Ca
• d)
  H

• a)
  SO₂
• b)
  H₂S
• c)
  H₂O
• d)
  S

• a)
  Graphite
• b)
  Phosphorus
• c)
  Hydrogen
• d)
  Bromine

• a)
  Decomposition reaction
• b)
  Combination reaction
• c)
  Double displacement reaction
• d)
  Displacement reaction

• a)
  2H₂ + O₂ → 2H₂O
• b)
  2Mg + O₂ → 2MgO
• c)
  AgNO₃ + NaCl → AgCl + NaNO₃
• d)
  H₂ + Cl₂ →  2HCl

• a)
  15.0
• b)
  40.0
• c)
  30.0
• d)
  39.0

• a)
  57, 89
• b)
  14, 14
• c)
  89, 57
• d)
  14, 16

• a)
  10
• b)
  8
• c)
  6
• d)
  4

• a)
  
• b)
  
• c)
  
• d)
  

• a)
  carboxylic acid
• b)
  aldehyde
• c)
  ketone
• d)
  alcohol

• a)
  reddish-brown
• b)
  grey 
• c)
  Blue
• d)
  silvery-white

• a)
  Sodium
• b)
  Iron
• c)
  Calcium
• d)
  Magnesium

• a)
  by gaining electrons
• b)
  by losing electr
• c)
  by sharing electrons
• d)
  none of the above

• a)
  
• b)
  
• c)
  
• d)
  

• a)
  
• b)
  
• c)
  
• d)
  

• a)
  Hydrogen gas and Iron chloride are produced
• b)
  Chlorine gas and Iron hydroxide are produced
• c)
  NO reaction takes place
• d)
  Iron salt and water are produced

• a)
  phosphorus
• b)
  sulphur
• c)
  carbon
• d)
  tin

• a)
  rusting of iron
• b)
  milk changes to curd
• c)
  digestion of food in our body
• d)
  changing of water to water vapour

• a)
  Liquefaction
• b)
  Reduction
• c)
  Calcination
• d)
  Roasting

• a)
  X = Fe, Y = Fe₂O₃
• b)
  X = Ag, Y = Ag₂S
• c)
  X = Cu, Y = CuO
• d)
  X = Al, Y = Al₂O₃

• a)
  absence of sunlight
• b)
  presence of sunlight
• c)
  presence of water
• d)
  presence of hydrochloric acid

• a)
  China rose(Gudhal)
• b)
  Beetroot
• c)
  Lichen
• d)
  Blueberries(Jamun)

• a)
  Zn
• b)
  Al
• c)
  Ag
• d)
  Fe

• a)
  sodium ethanoate and hydrogen
• b)
  sodium ethanoate and oxygen
• c)
  sodium ethoxide and hydrogen
• d)
  sodium ethoxide and oxygen

Which among the following are unsaturated hydrocarbons ?
(i) H₃C -CH₂-CH₂-CH₃ 
(ii) H₃C -C = C-CH₃ 
(iii) 
(iv) 

• a)
  (i) and (iii) 
• b)
  (i) and (iii)
• c)
  (ii) and (iv)
• d)
  (iii) and (iv)

• a)
  CO
• b)
  CO₂
• c)
  P₂O₅
• d)
  None of these

• a)
  (i) and (iv)
• b)
  (ii) and (iii)
• c)
  (i) and (ii)
• d)
  (iii) and (iv)

• a)
  H^-
• b)
  H⁺
• c)
  OH^-
• d)
  OH⁺

• a)
  Graphite
• b)
  Diamond
• c)
  Fullerene
• d)
  All of the above

• a)
  Metal A is more reactive than metal B
• b)
  Metal B is more reactive than metal A
• c)
  Metal A and metal B are equally reactive
• d)
  None of these

• a)
  CH₂=CH₂
• b)
  HC=CH
• c)
  CH₄
• d)
  C₂H₆

• a)
  Kr, Rn
• b)
  He, Kr
• c)
  Rn, He
• d)
  He, Ne

• a)
  Propanal
• b)
  Propanone
• c)
  Ethanol
• d)
  Ethanal

• a)
  7
• b)
  8
• c)
  16
• d)
  18

• a)
  Malleability
• b)
  Ductility
• c)
  Conduction
• d)
  Expansion

• a)
  Addition reaction
• b)
  Substitution reaction
• c)
  Displacement reaction
• d)
  Oxidation reaction

• a)
  Phosphorus
• b)
  Both are equally electronegative
• c)
  Nitrogen
• d)
  None of these

• a)
  SO₂
• b)
  H₂S
• c)
  H₂O
• d)
  S

• a)
  CH₃OH
• b)
  CH₃COOH
• c)
  CH₃COCH₃
• d)
  CH₃CHO

• a)
  Gold
• b)
  Platinum
• c)
  Silver
• d)
  Lead

• a)
  Anions
• b)
  Cations
• c)
  Ions
• d)
  None of these

• a)
  Gallium
• b)
  tantalum
• c)
  Aluminium
• d)
  manganese

• a)
  HCl
• b)
  NaOH
• c)
  Na₂CO₃
• d)
  CH₃COOH