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Equilibrium: The Balancing Game EQUILIBRIUM Chemical Equations Balancing Simulator TIME: 00:00.0 BEST: --:--.- ⬅ PREV 1 / 1 NEXT ➡ Go Fullscreen 🔄 RESET ⚡ START LAB MODE 🛑 STOP LAB MODE Ready to balance! Modify values to activate the scale. number of atoms in Reactants number of atoms in Products Koppisetti Venkatarao · S.A (P.S) ZPHSCHOOL, Chebrolu, kakinada Dist

light - Reflection and refraction Exercises Questions Page no 212 1. Which one of the following materials cannot be used to make a lens? a) Water b) Glass c) Plastic. d) Clay Ans:-( d ) Explanation :- Because clay is an opaque substance and it doesn't allow the light to pass through it. 2. The image formed by a concave mirror is observed to be virtual ,erect and larger than the object .Where should be the position of the object? a) Between the principal focus and the centre of curvature b) At the centre of curvature c) Beyond the centre of curvature d) Between the pole of the mirror and it's principal focus. Ans: -( d ) Explanation :- one and only condition that forms a virtual image using concave mirror is, the position of the object placed between pole and foc...

Acids, Bases and Salts textual questions Textual Questions 1. Which of the statements about the reaction below are incorrect?(1 mark) 2PbO(s) + C(s) →2Pb(s) + CO2(g) (a) Lead is getting reduced. (b) Carbon dioxide is getting oxidised. (c) Carbon is getting oxidised. (d) Lead oxide is getting reduced (i) (a) and (b) (ii) (a) and (c) (iii) (a), (b) and (c) (iv) all Ans:- (i) is correct. Explanation : The statements (a) and (b) are incorrect 2. Fe 2 O 3 + 2Al → Al 2 O 3 + 2Fe (1 mark) The above reaction is an example of a (a) combination reaction. (b) double displacement reaction. (c) decomposition reaction. (d) displacement reaction. Ans: - (d). Explanation : This is an example of displacement reaction...