A solid substance P which is very hard is used in the construction of many buildings, especially flooring. When substance P is heated strongly, it decomposes to form another solid  Q and a gas R is given out. Solid Q reacts with water with the release of a lot of heat to form a substance S. When gas R is passed into a clear solution of substance S, then a white precipitate of substance T is formed. The substance T has the same chemical composition as starting substance P.
(a) What is substance P? Write its common name as well as chemical formula.
(b)What is substance Q?
(c)What is gas R?
(d)What is substance S? What is its clear solution known as?
(e)What is substance T? Name any two natural forms in which substance T occurs in nature?

Tutorialspoint

Simply Easy Learning

---

Updated on 10-Oct-2022 10:19:51

0 Views

Print Article

• Related Articles
• The refractive indexes of four substances $P,\ Q,\ R$ and $S$ are $1.77,\ 1.50,\ 2.42$ and $1.31$ respectively. When light travelling in air is incident on these substances at equal angles, the angle of refraction will be the maximum in:(a) substance P (b) substance Q (c) substance R (d) substance S
• The refractive indices of four substance $P,\ Q,\ R$ and $S$ are $1.50,\ 1.36,\ 1.77$ and $1.31$ respectively. The speed of light is the maximum in the substance:(a) P (b) Q (c) R (d) S
• There are four substances W, X, Y, and Z. The substance W is a dark violet solid having diatomic molecules. A solution of W in alcohol is used as a common antiseptic C. The substance X is a white solid which is usually recovered from seawater on a large scale. The substance Y is a white solid which is insoluble in water and used in the form of small balls for the safe storage of woolen clothes. The substance Z is yet another white solid which is used in making commonly used dry cells.(a) Name (i) W (ii) X (iii) Y and (iv) Z.(b) Out of W, X, Y, and Z, which substance/substances can undergo sublimation?(c) Which substance is organic in nature?(d) What is the name of substance C?(e) Which substance belongs to the halogen family?
• A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?Iron nailGlassStone pieceWood
• A solution of a substance ‘X’ is used for white washing.(i) Name the substance ‘X’ and write its formula.(ii) Write the reaction of the substance ‘X’ named in (i) above with water.
• The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards a source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R.(a) What is the chemical substance P ?(b) State whether P prefers to remains in the sunlit side of a stem or in shade.(c) What is the effect of substance P on the rate of growth (i) a root, and (ii) a stem ?(d) What is the name of process (i) Q, and (ii) R ?(e) What is the general name of chemical substances like P ? Name another substance which belongs to this class of chemical substances.
• In the lungs:(a) what substance is taken into the body?(b) what substance is removed from the body?
• What is the meaning of substance?
• What is Inorganic Substance?
• What is ferromagnetic substance?
• What is the significance of the formula of a substance?
• What is meant by a substance?
• When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished.(a) Name the substance X.(b) How does this substance extinguish the fire?(c) Name another substance which behaves like X.
• Name of the chemical substance which constitute the genes is?
• What name is given to the amount of substance containing 6.022 × 1023 particles(atoms, molecules or ions) of a substance?