Chemistry - MOST IMPORTANT Uttarakhand PCS Previous Year Questions
Practice real questions from previous year exams of Uttarakhand PCS.
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q1
Which one of the following is the highest reactive metal?
🎯 Uttarakhand PCS Pre Exam- 14/07/2024
📘 Chemical Reactions📚 Combination Reaction
Q2
Chemical reaction: CO2 + H2O -> H2CO3 is example of
🎯 Uttarakhand PCS (M) 2002-03
📘 Metallurgy📚 General Facts
Q3
Food cans are coated with Tin instead of Zinc, because:
🎯 Uttarakhand PCS Pre Exam- 14/07/2024
📘 Water📚 Permanent Hardness
Q4
Which one is responsible for the permanent hardness of water?
🎯 Uttarakhand PCS (Pre) 2004-05
📘 Carbon Allotropes📚 Misc
Q5
Which of the following is not an allotrope of carbon?
🎯 Uttarakhand PCS (M) 2004-05
📘 Physical States of Matter and Their properties📚 Solid
Q6
Dry ice is used for making cold-baths in laboratories by mixing with volatile organic solvents. Identify the form of dry ice from the following:
🎯 Uttarakhand PCS (M) 2006
📘 Carbon Allotropes📚 Carbon Allotrope (Crystalline)
Q7
Mineral texture of diamond is:
🎯 Uttarakhand PCS (Pre) 2006-07
📘 Chemistry in Everyday Life📚 Common Gases used in daily life (LPG, CNG, etc.)
Q8
Domestic gas, LPG is—
🎯 Uttarakhand PCS (M) 2004-05
📘 Environmental Chemistry📚 Misc
Q9
Assertion (A): Hydrogen gas is called as clean fuel. Reason(R): Combustion of hydrogen gas does not produce C.F.C (chlorofluorocarbon).
🎯 Uttarakhand PCS (M) 2004-05
📘 Chemistry in Everyday Life📚 Common Gases used in daily life (LPG, CNG, etc.)
Q10
Gasohol is-
🎯 Uttarakhand PCS (Pre) 2004-05
📘 Organic Chemistry📚 Hydrocarbons
Q11
Petrol (Gasoline) is a mixture of-
🎯 Uttarakhand PCS (M) 2004-05
📘 Metallurgy📚 Metals and Their Ores
Q12
Bauxite is the ore of:
🎯 Uttarakhand PCS (Pre) 2006-07
📘 Chemistry in Everyday Life📚 Common Gases used in daily life (LPG, CNG, etc.)
Q13
Most of the explosives in mines occur due to the mixing of which of the following?
🎯 Uttarakhand PCS (Pre) 2006-07
📘 Chemistry in Everyday Life📚 Misc
Q14
Alfred Nobel (founder of Nobel Prize) is related to:
🎯 Uttarakhand PCS (M) 2004-05
📘 Chemistry in Everyday Life📚 Misc
Q15
Which one of the following is used to make ‘bullet- proof jacket’?
🎯 Uttarakhand PCS (Pre) 2004-05
📘 Organic Chemistry📚 Alcohol
Q16
Molasses is the best raw material for:
🎯 Uttarakhand PCS (Pre) 2002-03
📘 Acids, Bases and Salts📚 pH Scale
Q17
pH is related to-
🎯 Uttarakhand PCS (M) 2004-05
📘 Acids, Bases and Salts📚 pH Scale
Q18
pH value of water is-
🎯 Uttarakhand PCS (Pre) 2004-05
📘 Solution📚 Misc
Q19
Isotonic solutions have identical
🎯 Uttarakhand PCS (PRE) Lower 2021
📘 Radioactivity📚 Half-life
Q20
The half-life of a radioactive substance is 4 months. How much time it will take to decay 3/4th of substance?
🎯 Uttarakhand PCS Pre Exam- 14/07/2024