Tayari24

Rajasthan SI — Chemistry (basic reactions) MCQs

Practice 20 free chemistry (basic reactions) multiple choice questions for Rajasthan SI exam. Instant answers with explanations in Hindi and English.

Master Chemistry (basic reactions) under Basic Science for Rajasthan SI with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

Rajasthan SI — Basic Science — Chemistry (basic reactions)

20 Questions • Instant results & explanations • Hindi & English

0 / 20
Question 1 of 20

Match List-I (Metal) with List-II (Respective Ore) and select the correct answer using the codes given below: List-I a. Aluminum b. Iron c. Copper d. Zinc List-II 1. Calamine 2. Malachite 3. Siderite 4. Kaolinite

Question 2 of 20

The comprehensive chemical formulation of standard commercial soaps and detergents is strictly categorized under organic chemistry. This is fundamentally because these cleansing agents are essentially:

Question 3 of 20

According to the commonly used mnemonic 'Lina Na Ki Ruby Ce Friendship', which of the following sets of elements accurately represents the Alkali Metals of Group 1?

Question 4 of 20

In the chemical equation AB + CD → AD + CB, what specific action defines this as a Double Displacement reaction?

Question 5 of 20

Which of the following describes the accurate functional role of Silver Iodide (AgI) in modern meteorology?

Question 6 of 20

Balancing chemical equations and distinguishing between physical and chemical changes are fundamental concepts in general science. Which of the following is a definitive indicator of a chemical change rather than a mere physical change?

Question 7 of 20

Consider the following statements regarding the chemistry of industrial cleansing agents: I. Saponification is the reaction that yields soap and a valuable glycerol byproduct from naturally occurring triglycerides. II. Traditional soaps are highly effective and preferred in hard water because they form perfectly soluble calcium stearate. III. Micelles represent a stable colloidal emulsion that allows hydrophobic dirt to be lifted and rinsed away. Which of the statements given above is/are strictly correct?

Question 8 of 20

Which of the following best represents the generic equation for a Single Displacement reaction?

Question 9 of 20

What is the broad scientific term used to describe any atom that has deviated from its neutral state by either gaining or losing electrons?

Question 10 of 20

Advanced analytical chemistry often deals with topics such as polymers, metallurgy, and buffers. In a rigorous chemical context, what is the primary function of a 'buffer' solution?

Question 11 of 20

Which of the following accurately represents the elemental composition of the standard alloy 'Brass'?

Question 12 of 20

If a water body is experiencing severe foaming and pollution due to the accumulation of non-biodegradable cleaning agents, the primary chemical culprit is likely to be:

Question 13 of 20

Assertion (A): The chemical reactivity of an element is dictated primarily by the electrons residing in its outermost shell. Reason (R): These outermost electrons, called valence electrons, are the ones that actively participate in gaining, losing, or sharing during chemical bond formation.

Question 14 of 20

Which of the following factors plays the MOST critical role in determining why ionization energy substantially increases as one moves from left to right across a given period?

Question 15 of 20

Why is the chemical compound Ethyl mercaptan artificially added to Liquefied Petroleum Gas (LPG)?

Question 16 of 20

Consider the following statements regarding the fundamental structure of matter: I. An element cannot be broken down because it contains only one type of atom. II. A compound is formed when differing elements combine physically without fixed ratios. III. Molecules are formed exclusively when atoms chemically bond together. Which of the statements given above are correct?

Question 17 of 20

The efficient and safe manufacturing of chemical fertilizers, synthetic fibers, and medicinal compounds on a massive industrial scale is specifically studied and optimized under which domain?

Question 18 of 20

What is the common chemical name for Calcium Oxychloride ($CaOCl_2$)?

Question 19 of 20

Which of the following statements strictly defines the concept of 'Isotopes' in chemistry?

Question 20 of 20

Biological photosynthesis is an essential, life-sustaining process in plants. Under which specific category of chemical reactions is it scientifically classified?

More Basic Science Subtopics

Practice other subtopics under Basic Science to strengthen your Rajasthan SI preparation.