मराठी

Zinc blende is converted to oxide by ______ process. - Chemistry

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प्रश्न

Zinc blende is converted to oxide by ______ process.

पर्याय

  • roasting

  • calcination

MCQ
रिकाम्या जागा भरा

उत्तर

Zinc blende is converted to oxide by roasting process.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Metallurgy - Exercise 7B [पृष्ठ १२९]

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सेलिना Concise Chemistry [English] Class 10 ICSE
पाठ 7 Metallurgy
Exercise 7B | Q 17.2 | पृष्ठ १२९

संबंधित प्रश्‍न

Name two metals which are found in nature in the free state.


A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.


Write the composition of the alloy called bronze.


Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.


A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.
(a) Name the metal X.
(b) Name the metal oxide XO2.
(c) Which reducing agent can be used to reduce XO2 to obtain metal X?
(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.


Some metallic oxides can be reduced by hydrogen, carbon and carbon monoxide and some cannot. Explain.


An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?


Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.


Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity


Which of the following metals exist in their native state in nature?

(i) Cu

(ii) Au

(iii) Zn

(iv) Ag


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