Practice — Practicals and Projects

StudyLoop

Home
About
Ethics
Changelog

Review

Home
CBSE 11 Chemistry
Lab
Item 5

Multiple choice·Standard multi-step (3/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

Assertion (A): A single glass rod may be used to test several solutions with pH paper without cleaning it between tests. Reason (R): Carry-over of solution from one sample can change the colour response of the next pH paper strip.

Choose an answer

A.A is false, but R is true.

B.Both A and R are true, but R does not explain A.

C.Both A and R are true, and R correctly explains A.

D.A is true, but R is false.

Stuck?

Previous Back to unit Next

Something wrong with this item?

Flag this question

What should we review?

cbse-chemistry-11.practicals-projects.tlab-2.mc.005

Issue type

Answer or solution is wrongMath or LaTeX is brokenFigure is incorrect or unclearQuestion wording is unclearFormatting or layout is brokenExam or syllabus mismatchOther issue

Details (optional)

Email (optional)

Website

The current page address, technical context, selected issue type, and any details or email you enter are sent with this report. Your StudyLoop profile and answers are not sent.

StudyLoop

Free STEM practice for school, exams, and deep understanding.

About
Ethics
Disclaimer
Changelog

Free forever. No ads. No behavioural tracking.

Source code: Studylooping/studyloop_Agasthya

StudyLoop is an independent, free educational project. It is not affiliated with, sponsored by, or endorsed by CBSE, NCERT, the College Board, or any exam body. AP® is a trademark registered by the College Board. All practice content is original and is not copied from official papers, textbooks, or commercial prep resources.

Please provide feedback

Tell us what would make StudyLoop better.

Feedback type

Something is brokenContent qualityNavigation or usabilityAccessibilitySuggestion or requestSomething I likedOther feedback

Details

Email (optional)

Website

The current page address, technical context, selected issue type, and any details or email you enter are sent with this report. Your StudyLoop profile and answers are not sent.