chemistry | Multiple Choice Questions (MCQ) Choose Part Part A

Q1 - Which element has the atomic number 3?
A. Boron
B. Lithium
C. Beryllium
D. Sodium
Answer - B
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Q2 - Fe has 26 protons in its nucleus. What are the number of electrons in Fe²+ ( II ) ion?
A. 24
B. 26
C. 28
D. 13
Answer - A
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Q3 - Which of the following elements has the lowest melting point?
A. Xenon
B. Iodine
C. Barium
D. Magnesium
Answer - A
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Q4 - The Chemical formula of Ammonium nitrate is _________
A. (NH2)2NO3
C. NH4(NO3)2
Answer - B
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Q5 - The Energy Of The Sun Is Mainly Due To ?
A. Heat
B. Nuclear Fusion
C. Radioactivity
D. Nuclear Fission
Answer - B
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Q6 - Milk Is A Colloidal System In Which ?
A. Fat Is Dispersed In Water
B. Fat And Water Are Dispersed In Each Other
C. Fat Is Dissolved
D. Water Is Dispersed In Fat
Answer - A
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Q7 - Diamonds Are Glittering And Attractive Because Light Incident On Them Undergoes ?
A. Highest Refraction
B. Multiple Internal Reflections
C. Multiple Surface Reflections
D. Hundred Percent Transmission
Answer - B
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Q8 - Which Of These Acids Is Not Organic In Origin?
A. Lactic Acid
B. Sulphuric Acid
C. Citric Acid
D. Oxalic Acid
Answer - B
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Q9 - The Bhopal Tragedy Was Caused By The Gas ?
A. Chlorine
B. Methyl Isocyanate
C. Carbon Monoxide
D. Phosgene
Answer - B
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Q10 - The Gas Which Is Mainly Responsible For The Greenhouse Effect Is ?
A. Carbon Monoxide
B. Oxygen
C. Ozone
D. Carbon Dioxide
Answer - D
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