In first test tube, the following reaction involves: CaCO₃ + 2HCl → CO₂ + H₂O + CaCl₂ CO2 gas is evolved here. In second test tube, the following reaction takes ...

Class 10th Science Session 2022-23 Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions

As the object is kept at 40 cm or 2f. Image will also be formed at 2f. It will be a real and inverted image will be formed in front of the mirror and image will be of same size ...

Because it is covalent compound formed by sharing of electrons. Whereas, in other three compounds are ionic compounds & they conduct electricity in their molten state.

In the given question, u = – 30 cm and f = -20 cm. so, the object lies between F (20 cm) & C (40 cm). Therefore, a real image is formed beyond C, that is beyond 40 cm. Formula ...