Chemistry
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- In the exam pattern: First Stage Computer Based Test (CBT-I), General Science: 30 questions, 30 marks (RRB notice, 13 Aug 2026).
- Next exam day: CBT-II exam (expected): 15 Feb 2027 (Expected — an estimate, not announced).
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Practice this topic
Take a full mock →Q1 · Chemistry · EASY
Which of the following elements has the electronic configuration 2, 8, 2?
Q2 · Chemistry · EASY
A solution has a pH of 3. Which of the following statements is correct about this solution?
Q3 · Chemistry · MEDIUM
In the chemical reaction: 2H2 + O2 -> 2H2O, what is the mole ratio of hydrogen gas to oxygen gas consumed?
Q4 · Chemistry · MEDIUM
Which of the following metals is the most reactive?
Q5 · Chemistry · MEDIUM
Which is the simplest alkane that shows structural isomerism?