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All seven General Studies Paper I (Prelims) subjects: History, Polity, Geography, Economics, Science & Technology, Environment, and Current Affairs. Cards are organized by topic and weighted to match exam patterns.

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UPSC CSE Prelims Chemistry — Concepts & Applications Flashcards

Master 58 chemistry — concepts & applications concepts for the UPSC CSE Prelims.

Basic Chemistry & Everyday Applications

12 cards

Question

Identify the subatomic particles and their properties in an atom.

An atom's nucleus contains positively charged and uncharged . The negatively charged orbit the nucleus. The atomic number is determined exclusively by the number of .

Question

Which of the following statements about isotopes is/are correct?

They are atoms of the same element having the same atomic number but different mass numbers.
Carbon-14 is an isotope of carbon containing 8 neutrons.

Alloys, Metals & Materials

12 cards

Question

Consider the following statements regarding Steel and its variants:

Standard steel is primarily an alloy of iron and carbon.
Stainless steel owes its corrosion resistance primarily to the addition of chromium and nickel.

Which of the statements given above is/are correct?

Question

Complete the information about the alloy Bronze:

Bronze is considered the earliest alloy and is primarily composed of and . It is widely used in making statues and coins.

Chemical Pollution & Environmental Chemistry

6 cards

Question

Complete the statement regarding the ozone layer and its protection:

The ozone layer, located in the , primarily blocks harmful radiation. It is depleted by substances like CFCs, whose production is regulated by the .

Question

Consider the following statements regarding Greenhouse Gases (GHGs):

Water vapor is naturally the most abundant greenhouse gas in the Earth's atmosphere.
GHGs warm the Earth by trapping incoming shortwave solar radiation.

Which of the statements given above is/are correct?

Electrochemistry — Electrolysis, Batteries & Electroplating

6 cards

Question

Complete the statement regarding the basic principles of electrolysis:

Electrolysis involves decomposition by electric current. The positively charged electrode is the , while the negatively charged electrode is the . The exact mass of the substance deposited at the electrodes is governed by laws.

Question

Identify the correct setup and purpose of electroplating a metal object:

To successfully coat a metal via electroplating, the object to be coated must be made the in the circuit. This process is widely used to deposit layers of metals like chromium or silver to provide .

Polymers, Plastics & Rubber

6 cards

Question

Differentiate the characteristics and examples of heat-sensitive polymers:

soften on heating and can be remolded multiple times. Common examples include and .

Question

Consider the following plastics:

Bakelite
Polyethylene
Melamine

Which of the above is/are examples of thermosetting plastics (plastics that harden permanently after being molded)?

Chemistry in Daily Life — Food, Water & Household

10 cards

Question

Complete the process of soap formation and its cleaning mechanism:

The process of making soap is called , which involves the reaction of a fat or oil with a strong base like to produce soap and . In water, soap molecules arrange themselves into spherical clusters called to trap and remove grease.

Question

Consider the following statements regarding synthetic detergents compared to traditional soaps:

Detergents can lather well even in hard water, whereas soaps form insoluble scum.
All synthetic detergents are completely biodegradable and do not cause water pollution.

Which of the statements given above is/are correct?

Periodic Table Trends, Noble Gases & Chemical Bonding

6 cards

Question

Complete the statement regarding trends in the periodic table:

Moving down a group in the periodic table, atomic radius while ionization energy . Conversely, moving across a period from left to right, atomic radius .

Question

Which chemical element possesses the highest electronegativity in the periodic table?

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