Chemistry set 1 MCQs

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Showing 504 questions
Q.481 Which of the following elements is a 'metalloid'?
A sodium
B germanium
C chlorine
D iron
Discuss / Board
Q.482 The 'Graham's Law' deals with the:
A diffusion of gases
B solubility of gases
C pressure of gases
D expansion of gases
Discuss / Board
Q.483 The 'Specific Conductance' of an electrolyte:
A increases with dilution
B decreases with dilution
C remains constant
D depends only on temperature
Discuss / Board
Q.484 Which of the following is not a 'Radioactive' isotope of carbon?
A carbon-12
B carbon-13
C carbon-14
D both a and b
Discuss / Board
Q.485 What is the 'pH' of gastric juice in the human stomach?
A 1.5 to 3.5
B 7.0 to 7.4
C 8.0 to 9.0
D 12.0 to 14.0
Discuss / Board
Q.486 The 'Bessemer Process' was historically used for the mass production of:
A aluminum
B copper
C steel
D sodium
Discuss / Board
Q.487 Which of the following is 'Paramagnetic'?
A co
B no
C cn-
D n2
Discuss / Board
Q.488 The 'Activation Energy' of a reaction can be lowered by:
A increasing temperature
B adding a catalyst
C increasing pressure
D increasing concentration
Discuss / Board
Q.489 What is the common name of 'Dinitrogen Oxide'?
A laughing gas
B teargas
C water gas
D producer gas
Discuss / Board
Q.490 Which of the following 'Ores' is concentrated by froth flotation?
A hematite
B bauxite
C galena
D cassiterite
Discuss / Board
Q.491 The 'Pauli Exclusion Principle' states that:
A no two electrons have the same set of 4 quantum numbers
B electrons occupy lowest energy orbitals first
C orbitals are filled singly first
D momentum and position cannot be known simultaneously
Discuss / Board
Q.492 Which among the following is a 'Condensed' form of natural gas?
A lpg
B lng
C cng
D biogas
Discuss / Board
Q.493 The 'Iodine Value' is used to measure the:
A acidity of oils
B degree of unsaturation in oils
C saponification rate
D peroxide content
Discuss / Board
Q.494 Which among the following is a 'Nucleic Acid'?
A rna
B hemoglobin
C insulin
D glycogen
Discuss / Board
Q.495 The 'Critical temperature' of water is approximately:
A 100 C
B 374 C
C 273 K
D 0 C
Discuss / Board
Q.496 What is the common name of 'Calcium Hydroxide'?
A quicklime
B slaked lime
C limestone
D gypsum
Discuss / Board
Q.497 Which among the following is the 'Source' of Solar Energy?
A nuclear fission
B nuclear fusion
C chemical oxidation
D gravitational collapse
Discuss / Board
Q.498 The 'Standard Hydrogen Electrode' (SHE) has a potential of:
A 1.0 V
B 0.0 V
C -0.76 V
D 1.1 V
Discuss / Board
Q.499 Which of the following is used in 'Non-stick' cookware?
A pvc
B teflon
C polystyrene
D polyester
Discuss / Board
Q.500 The 'Gold Number' is used to measure the power of:
A oxidizing agents
B protective colloids
C catalysts
D electrolytes
Discuss / Board
Q.501 Which gas is responsible for 'Global Warming'?
A oxygen
B carbon dioxide
C nitrogen
D argon
Discuss / Board
Q.502 Which of the following is an 'alkali'?
A hcl
B koh
C ch3cooh
D nh3 (gas)
Discuss / Board
Q.503 The 'Avogadro's Law' states that at constant P and T, V is proportional to:
A temperature
B mass
C number of moles
D pressure
Discuss / Board
Q.504 Which among the following is the 'strongest' reducing agent?
A li
B na
C k
D cs
Discuss / Board

Master Chemistry set 1 for All Competitive Exams 2026

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