Zinc is a transition element and has many useful applications. The presence of zinc in trace amounts is essential in humans and many animals. Answer the following question : What is the role of zinc in the body of humans and animals?

Zinc is a transition element and has many useful applications. The presence of zinc in trace amounts is essential in humans and many animals. Answer the following question : Name the compound of zinc used in paints.

Zinc is a transition element and has many useful applications. The presence of zinc in trace amounts is essential in humans and many animals. Answer the following question : Is ZnSO_4 (aq) coloured or colourless?

Zinc is a transition element and has many useful applications. The presence of zinc in trace amounts is essential in humans and many animals. Answer the following question : A compound of zinc is used as a rodent poison. Name the compound.

Given below is the diagram of a human ovum surrounded by a few sperms. Observe the diagram and answer the following questions. What is the role of zona pellucida in this process?

Colloidal solutions are heterogeneous solutions which contain particles of intermediate size between those of true solutions and suspensions. These particles do not settle under gravity but settle on centrifugation. These particles are found to have charge. We notice many applications of these in our day to day life. Answer the following question : Name a colloidal solution of silver used as eye lotion.

Colloidal solutions are heterogeneous solutions which contain particles of intermediate size between those of true solutions and suspensions. These particles do not settle under gravity but settle on centrifugation. These particles are found to have charge. We notice many applications of these in our day to day life. Answer the following question : Colloidal medicines are used for intramuscular injections. Why?

The total number of cows in five villages are as follows: Village 11:60,Village 2:90,Village 3:120,Village 4:150 ,Village 5 : 40 Prepare a pictograph of these animals using one symbol + to represent 10 animals and answer the following questions from the pictograph: What is the total number of cows in all the five villages?

These questions consist of two statements each, printed as Assertion and Reason. While answering these questions,you are requied to choose any one of the following four responses If both Assertion and Reason are true and Reason is a correct explanation of the assertion If both Assertion and REason are true but Reason is not a correct explanation of the Assertion If Assertion is true but Reason is false If both Assertion and Reason is false. Assertion:Rate of extinction of wildlife has become rapid in the last one hundred years Reason: Unplanned human activities like population explosion, deforestation, industriliazation, hunting etc have destroyed the natural habitats of many spp. of wildlife.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: mast cells in the human body release excessive amounts of inflammatory chemicals which cause allergic reactions. Reason. Allergens in the environment on reaching human body stimulate mast cells in certain individuals.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Rate or extinction of wildlife has become rapid in the last one hundred years. Reason: Unplanned human activities like population explosion, deforestation, industrialization , hunting etc. have destroyed the natural habitats of many spp. of wildlife.