Our Environment — Science STD 10 — Question

Flow of energy in an ecosystem is always :

Dandelion flowers open the petals in bright light during the daytime but close the petals in dark at night. This response of dandelion flowers to light is called:

The metal which can be extracted simply by heating the cinnabar ore in air is :

The colour of methyl orange indicator in a solution is yellow. The pH of this solution is likely to be:

What is the minimum resistance which can be made using five resistors each of 1/5 Ω?

Which is the first enzyme to mix with food in the digestive tract?

Which of the following alloys contains mercury as one of the constituents?

Which of the following characteristic is not suitable for a fuse wire?

You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.