Category: NEET Chemistry Objective Questions

300+ TOP MCQs on Hydrogen Ion Concentration pH Scale and Buffer Solution and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Hydrogen Ion Concentration pH Scale and Buffer Solution Multiple Choice Questions

MCQs on Hydrogen Ion Concentration pH Scale and Buffer Solution :

1. Range of pH scale is
(A) 7 to 10
(B) 0 to 10
(C) 0 to 14
(D) 7 to 14

Answer

Answer: (c)

2. Level of pH found in antacid solution
(A) ≤ 6.5
(B) ≥ 7.0
(C) > 10
(D) > 14

Answer

Answer: (b)

3. Three unknown solutions are given with pH value of 6, 8 & 9.5 respectively. Which solution will contain the maximum OH– ion?
(A) Solution sample-1
(B) Solution sample-2
(C) Solution sample-3
(D) Data are insufficient

Answer

Answer: (c)

4. pH of neutral salt is
(A) 7
(B) <7 (c) >7
(D) 0

Answer

Answer: (a)

5. Ammonium sulphate salt is
(A) basic salt
(B) acidic salt
(C) neutral salt
(D) complex salt

Answer

Answer: (a)

6. When sulphuric acid reacts with eggshell it produces
(A) hydrogen gas
(B) nitrogen gas
(C) carbon monoxide
(D) carbon dioxide gas

Answer

Answer: (d)

7. In the Chlor-alkali process, the byproduct gases are
(A) hydrogen only
(B) hydrogen and oxygen gas
(C) hydrogen and chlorine gas
(D) chlorine and nitrogen gas

Answer

Answer: (c)

8. The following salt is not hygroscopic in nature
(A) NaCl
(B) MgCl
(C) CaCl2
(D) KCl

Answer

Answer: (a)

9. When more and more water is diluted with acids its H+ ion concentration will
(A) increase
(B) decrease
(C) remains the same
(D) depends on the type of acids

Answer

Answer: (b)

10. When acids react with metal oxide it produces
(A) water and salt
(B) salts and hydrogen gas
(C) salts only
(D) no reaction takes place

Answer

Answer: (a)

300+ TOP MCQs on Freezing Point of the Solvent and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Freezing Point of the Solvent Multiple Choice Questions

MCQs on Freezing Point of the Solvent :

1. Which one of the following gases has the lowest value of Henry’s law constant?
(A) N2
(B) He
(C) H2
(D) CO2

Answer

Answer: (d)

2. If 10ml of 0.1M aqueous solution of NaCl is divided into 1000 drops of equal volume. What will be the concentration of one drop?
(A) 0.01M
(B) 0.10M
(C) 0.001M
(D) 0.0001M

Answer

Answer: (b)

3. A 0.5 molal solution of ethylene glycol in water is used as a coolant in a car. If the freezing point constant of water be 1.86oC per mole, the mixture shall freeze at
(A) 0.93oC
(B) -0.93oC
(C) 1.86oC
(D) -1.86oC

Answer

Answer: (b)

4. Which statement is true for a solution of 0.020M H2SO3?
(A) 2 litre of the solution contains 0.020 mole of SO42-
(B) 2 litre of the solution contains 0.080 mole of H3O+
(C) 1 litre of the solution contains 0.020 mole of H3O+
(D) None of these

Answer

Answer: (b)

5. A 500g toothpaste sample has 0.2g fluoride concentration. What is the concentration of F in terms of ppm level?
(A) 250
(B) 300
(C) 400
(D) 1000

Answer

Answer: (c)

6. If at a certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5mm Hg, the molality of the solution is
(A) 0.02
(B) 1.2
(C) 1.11
(D) 0.08

Answer

Answer: (c)

7. Which of the following 0.10m aqueous solutions will have the lowest freezing point?
(A) Al2(SO4)3
(B) C6H12O6
(C) KCl
(D) C12H22O11

Answer

Answer: (a)

8. The amount of urea to be dissolved in 500 cc of water (K = 1.86oC mol-1) to produce a depression of 0.186oC in the freezing point is
(A) 9g
(B) 6g
(C) 3g
(D) 0.3g

Answer

Answer: (c)

9. The empirical formula of a nonelectrolyte is CH2O. A solution containing 6g of the compound exerts the same osmotic pressure as that of 0.05M glucose solution at the same temperature, The molecular formula of the compound is
(A) C2H4O2
(B) C3H6O3
(C) C5H10O5
(D) C4H8O4

Answer

Answer: (d)

10. The molar mass of the solute sodium hydroxide obtained from the measurement of the osmotic pressure of its aqueous solution at 27oC is 25gmol-1. Therefore its ionization solution at 27oC is 25 g mol-1. Therefore its ionization percentage in this solution is
(A) 75
(B) 60
(C) 80
(D) 70

Answer

Answer: (b)

300+ TOP MCQs on Chemistry in Everyday Life and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Chemistry in Everyday Life Multiple Choice Questions

MCQs on Chemistry in Everyday Life :

1. Chloramine-T is an
(A) disinfectant
(B) antiseptic
(C) analgesic
(D) antipyretic

Answer

Answer: (a)

2. Benzalkonium chloride is a
(A) cationic surfactant and antiseptic
(B) anionic surfactant and soluble in most of the organic solvents
(C) cationic surfactant and insoluble in most organic solvents.
(D) cationic surfactant and antimalarial

Answer

Answer: (a)

3. Interferon is connected with
(A) tonic
(B) virus
(C) carbohydrate
(D) ore of iron

Answer

Answer: (b)

4. Ibuprofen contains
(A) only S-enantiomer
(B) only R-enantiomer
(C) the racemic mixture of both R and S enantiomer
(D) both R and S enantiomers are active pain killers

Answer

Answer: (c)

5. Which of the following is a hypnotic d–g?
(A) luminal
(B) salol
(C) catechol
(D) chemisol

Answer

Answer: (a)

6. Detergents are prepared by the action of H2SO4 on which of the following?
(A) cholesterol
(B) Lauryl alcohol
(C) Cyclohexanol
(D) p-Nitrophenol

Answer

Answer: (b)

7. Which of the following will not act as an antacid?
(A) sodium hydrogen carbonate
(B) magnesium hydroxide
(C) sodium carbonate
(D) aluminium carbonate

Answer

Answer: (c)

8. The main cause of acidity in the stomach is
(A) release of extra gastric acids which decrease the pH level
(B) indigestion and pain in the large intestine
(C) increase the pH level in the stomach
(D) release of extra bile juice which increases alkaline medium in the stomach

Answer

Answer: (a)

9. Chloramphenicol is
(A) broad spectrum antibacterial
(B) broad spectrum analgesic
(C) broad spectrum antibiotic
(D) narrow spectrum antibiotic

Answer

Answer: (c)

10. One of the most widely used d–gs in medicine iodex is
(A) methyl salicylate
(B) ethyl salicylate
(C) acetyl salicylic acid
(D) o-hydroxy benzoic acid

Answer

Answer: (a)

300+ TOP MCQs on Redox Reaction and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Redox Reaction Multiple Choice Questions

MCQs on Redox Reaction :

1. Which of the compounds can exist together?
(A) HgCl2, SnCl2
(B) FeCl3, KI
(C) FeCl3, SnCl2
(D) FeCl2, SnCl2

Answer

Answer: (d)

2. One mole of ferrous oxalate requires____ moles of MnO4– to get oxidised completely in an acidic medium
(A) 0.6 moles
(B) 0.4 moles
(C) 0.2 moles
(D) 7.5 moles

Answer

Answer: (b)

3. H2O2 changes Cr2O72- ion to CrO5 in an acidic medium, the oxidation state of Cr in CrO5 is
(A) +6
(B) +5
(C) -10
(D) +3

Answer

Answer: (a)

4. H2SO4 acts as a strong oxidising agent. In which of the reaction, is it not acting as an oxidising agent?
(A) C + 2H2SO4 → CO2 + 2SO2 + 2H2O
(B) CaF2 + 2H2SO4 → CaSO4 + 2HF
(C) S + 2H2SO4 → 3SO2 + H2O
(D) Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O

Answer

Answer: (b)

5. During a reaction of oxalic acid, potassium chlorate and sulphuric acid, the oxidation number of which of the element undergoes a maximum change
(A) H
(B) S
(C) C
(D) Cl

Answer

Answer: (d)

6. Find the redox reaction
(A) In the atmosphere, O3 from O2 by lighting
(B) The reaction of H2SO4 with NaOH
(C) Both oxidation and reduction reaction
(D) Evaporation of water

Answer

Answer: (c)

7. Find the oxidation state of I in H4IO6–
(A) +7
(B) +5
(C) +1
(D) -1

Answer

Answer: (a)

8. In which of the following complex, the oxidation number of Fe is +1?
(A) Fe4[Fe(CN)6]3
(B) [Fe(H2O)5NO]SO4
(C) [FeBr4]–
(D) [Fe(H2O)6]2-

Answer

Answer: (b)

9. Which among the following compounds is the most reducing compound?
(A) H2S
(B) HNO2
(C) SnCl2
(D) H2SO3

Answer

Answer: (a)

10. Which among the following is the strongest oxidising agent?
(A) H2O2
(B) O3
(C) K2Cr2O7
(D) KMnO4

Answer

Answer: (b)

300+ TOP MCQs on Acids and Bases and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Acids and Bases Multiple Choice Questions

MCQs on Acids and Bases :

1. Bleaching powders chemical name is
(A) calcium hypo oxychloride
(B) calcium oxychloride
(C) calcium chloride
(D) calcium chloro oxide

Answer

Answer: (b)

2. The ratio of the water molecule in plaster of paris and gypsum is
(A) 3:1
(B) 1:3
(C) 1:4
(D) 4:3

Answer

Answer: (c)

3. Baking powder is
(A) sodium carbonate + sodium tartaric
(B) sodium bicarbonate + sodium tartaric
(C) sodium carbonate + tartaric acid
(D) sodium carbonate + sodium benzoate

Answer

Answer: (b)

4. Gastric juice contains HCl which is one example of
(A) inorganic acid
(B) organic acid
(C) soft organic acid
(D) strong inorganic acid

Answer

Answer: (a)

5. When milk of magnesia reacts with acetic acid it produces
(A) basic salts
(B) acidic salts
(C) neutral salt
(D) complex salt

Answer

Answer: (c)

6. Which of the following phenomena will occur when a small amount of acid is added to water?
(A) dilution
(B) neutralisation
(C) salt formation
(D) ionization

Answer

Answer: (a, d)

7. Brine is used for industrial production of
(A) NaOH
(B) KOH
(C) bleaching powder
(D) none of the above

Answer

Answer: (a)

8. When base reacts with the non-metal oxide
(A) it neutralizes each other
(B) it creates fire
(C) it produces acidic salts
(D) it produces basic salts

Answer

Answer: (a)

9. Corrosive effect on the skin is caused by
(A) acids
(B) bases
(C) water
(D) mercury

Answer

Answer: (a, b)

10. The acid used for the manufacture of fertilizers and explosives is
(A) nitric acid
(B) sulfuric acid
(C) phosphoric acid
(D) hydrochloric acid

Answer

Answer: (a)

300+ TOP MCQs on Hybridisation and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Hybridisation Multiple Choice Questions

MCQs on Hybridisation :

1. The compound which contains both ionic and covalent bond:
(A) KCl
(B) KCN
(C) CH4
(D) H2

Answer

Answer: (b)

2. The maximum number of 90o angles between bond pair-bond pair of electrons is observed in
(A) dsp2 hybridisation
(B) sp3d hybridisation
(C) dsp3 hybridisation
(D) sp3d2 hybridisation

Answer

Answer: (d)

3. Ether is more volatile than alcohol having the same molecular formula. This is due to
(A) alcohols having resonance structures
(B) intermolecular hydrogen bonding in ethers
(C) intermolecular hydrogen bonding in alcohols
(D) the dipolar character of ethers

Answer

Answer: (c)

4. The main axis of a diatomic molecule is z, molecular orbital px and py overlap to form which of the following orbital?
(A) pi molecular orbital
(B) sigma molecular orbital
(C) gamma molecular orbital
(D) No bond will be formed

Answer

Answer: (a)

5. Total number of lone pair of electrons in I3- ion is
(A) 3
(B) 6
(C) 9
(D) 12

Answer

Answer: (c)

6. BCl3 is a planar molecule whereas NCl3 is pyramidal because
(A) B-Cl bond is more polar than NaCl bond
(B) N-Cl bond is more covalent than B-Cl bond
(C) the nitrogen atom is smaller than boron atom
(D) BCl3 has no pair but NCl3 has a lone pair of electrons

Answer

Answer: (d)

7. In which solvent NaCl has maximum solubility?
(A) H2O
(B) C2H5OH
(C) CH3COCH3
(D) C2H5OC2H5

Answer

Answer: (a)

8. Which one of the following pairs of molecules will have permanent dipole moments for both members?
(A) NO2 and CO2
(B) NO2 and O3
(C) SiF4 and CO2
(D) SiF4 and NO2

Answer

Answer: (b)

9. Which of the following compounds has the smallest bond angle in its molecule?
(A) H2O
(B) H2S
(C) NH3
(D) SO2

Answer

Answer: (b)

10. Which one of the following properties is not shown by NO?
(A) it is diamagnetic in the gaseous state
(B) it is a neutral oxide
(C) it combines with oxygen to form nitrogen dioxide
(D) its bond order is 2.5

Answer

Answer: (a)