Concept-wise Practice

unknown substance MCQ Questions for Class 9

unknown substance se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with unknown substance.

अज्ञात रसायन का स्वाद क्यों नहीं लेना चाहिए?

Why should an unknown chemical never be tasted?

Explanation opens after your attempt
Correct Answer

C. वह हानिकारक हो सकता हैIt may be harmful

Step 1

Concept

An unknown chemical may be toxic or harmful. In exams remember laboratory safety rules.

Step 2

Why this answer is correct

The correct answer is C. वह हानिकारक हो सकता है / It may be harmful. An unknown chemical may be toxic or harmful. In exams remember laboratory safety rules.

Step 3

Exam Tip

अज्ञात रसायन विषैला या हानिकारक हो सकता है। परीक्षा में प्रयोगशाला सुरक्षा नियम याद रखें।

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