मराठी

Zinc Oxide is a Metal Oxide. Which of the Following Term Best Describes the Nature of Zinc Oxide: (A) an Acidic Oxide (B) a Basic Oxide (C) an Amphoteric Oxide (D) a Neutral Oxide - Science

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प्रश्न

Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
(a) an acidic oxide
(b) a basic oxide
(c) an amphoteric oxide
(d) a neutral oxide

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उत्तर

(c) an amphoteric oxide
Zinc oxide can react with both acids and bases to form salt and water.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३६]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 80 | पृष्ठ १३६

संबंधित प्रश्‍न

A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green


‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.


Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Metal Iron (II) sulphate Cooper (II) sulphate Zinc sulphate Silver nitrate
A No reaction Displacement    
B Displacement   No reaction  
C No reaction No reaction No reaction Displacement
D No reaction No reaction No reaction No reaction

Use the Table above to answer the following questions about metals A, B, C and D.

  1. Which is the most reactive metal?
  2. What would you observe if B is added to a solution of copper (II) sulphate?
  3. Arrange the metals A, B, C and D in the order of decreasing reactivity.

Which gas is produced when dilute hydrochloric acid is added to a reactive metal? 


A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.

In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.


Complete and balance the following equation:

Cu (NO3)2 (aq)  +  Zn(s)  →

 


Fill in the following blank with suitable word:

Calcium is a ................. reactive metal than sodium.


Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.


How do non-metals react with hydrogen? Explain with an example.


Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.


Why does aluminium not react with water under ordinary conditions?


Why is white phosphorus kept immersed under water?


Which non-metal has been placed in the reactivity series of metals?


You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper


An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag


An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?


If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?


Choose the correct alternative and rewrite the following:

Which of the following is lue in colour?


The substance that will be flattened on beating with a hammer is ______.


Tungsten wire is used in electric bulbs.


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