Metals X and Y can be recovered from the anode mud left behind after the electrolytic refining of copper metal. The coins made of metal X look new even after several years of use but the coins made of metal Y lose their shine gradually and get blackened soon. When metal X is alloyed with a small amount of metal Y, it becomes hard and hence suitable for making ornaments. What are metals X and Y? Also state the colour of metal X.
Metal X is gold and Metal Y is silver as they are used to make ornaments. The colour of metal X (gold) is yellow.
Related Articles
- A student dipped the strip of metal X in a blue coloured salt solution YSO4. After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metals X and Y together form an alloy Z. (a) What could be (a) metal X, and (ii) metal Y? (b) Name the metal salt YSO4. Write its chemical formula (c) What type of chemical reaction takes place when metal X reacts with salt solution YSO4. (d) Name the alloy Z.
- A strip of metal X is dipped in a blue coloured salt solution YSO4. After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metal X and metal Y together form an alloy Z.(a) What could metal X be?(b) What could metal Y be?(c) Name the metal salt YSO4.(d) What type of chemical reaction takes place when metal X reacts with salt solution YSO4? Write the equation of the chemical reaction involved.(e) Name the alloy Z.
- A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells.(a) Name the metals X and Y. (b) Which of the two metals is more reactive: X or Y? (c) Name one ore of metal X. Also write its chemical formula. (d) Name one ore of metal Y. Also write its chemical formula. (e) Name one alloy of metal X and one alloy of metal Y.
- The electronic configurations of three elements X, Y, and Z are X - 2,8; Y - 2, 8, 7 and Z - 2, 8, 2. Which of the following is correct?(a) X is a metal(b) Y is a metal(c) Z is a non-metal(d) Y is a non-metal and Z is a metal
- When a strip of red-brown metal X is placed in a colourless salt solution YNO3 then metal Y is set free and a blue coloured salt solution X(NO3)2 is formed. The liberated metal Y forms a shining white deposit on the strip of metal X.(a) What do you think metal X is?(b) Name the salt YNO3.(c) What could be metal Y?(d) Name the salt X(NO3)2(e) What type of reaction takes place between metal X and salt solution YNO3?
- A student was given two metal strips X and Y alongwith colourless silver nitrate solution to perform two separate displacement reactions. When the student placed metal strip X in silver nitrate solution for a considerable time, he observed that the solution turned blue and a coating of silver metal was formed on the strip. And when the student immersed metal strip Y in silver nitrate solution for an equal time, he observed that the solution turned light green with the formation of a coating of silver metal on the strip. The correct conclusion of the student about the identity of metals X and Y is :(1) X is copper and Y is magnesium(2) X is zinc and Y is copper(3) X is iron and Y is copper (4) X is copper and Y is iron
- Hydrochloric acid reacts with a metal X to form a gas Y which burns with a ‘pop’ sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.(a) Name X and Y(b) Write the chemical equation of the reaction of metal X with (i) Hydrochloric acid, and (ii) Sodium hydroxide solution.
- You are given two materials X and Y. On hammering X is flattened, but Y breaks. Which one is a metal?
- A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.
- If $x=34$ and $y=x$, what is the value of $x+y$?
- When metal X is treated with dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.(a) Name any two metals which can behave like metal X.(b) Name any two acids which can behave like acid Y.(c) Name the gas Z.(d) Is gas Z lighter than or heavier than air?(e) Is the reaction between metal X and dilute acid Y exothermic or endothermic?(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate the physical states of all the reactants and products
- What is meant by refining of metals? In the electrolyte refining of metal M, name the cathode, anode and the electrolyte.
- The metal X reacts with dilute hydrochloric acid to form a gas Y. The metal X also reacts with sodium hydroxide solution (on heating) to form the same gas Y. When a lighted matchstick is applied, this gas burns by producing a ‘pop’ sound.(a) Name two metals which could behave like X(b) Name the gas Y
- A silvery-white metal X taken in the form of ribbon, when ignited, burns in air with a dazzling white flame to form a white powder Y. When water is added to powder Y, it dissolves partially to form another substance Z.(a)What could metal X be? (b) What is powder Y? (c) With which substance metal X combines to form powder Y? (d) What is substance Z? Name one domestic use of substance Z? (e)Write a balanced chemical equation of the reaction which takes place when metal X burns in air to form powder Y.
- An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.(a) Where in the periodic table are elements X and Y placed?(b) Classify X and Y as metal (s), non-metal (s) or metalloid (s).(c) What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed.(d) Draw the electron dot structure of the divalent halide.
Kickstart Your Career
Get certified by completing the course
Get Started