INITIALS: 22. Which of the following represents a combustion reaction? A) 2Na(s) + 2H2O(l) ? 2NaOH(aq) + H2(g) B) 2011(g) + 702(g) ? 4CO2(g) + 6H2O(l) C) N2(g) +3H(g) 2NH3(g) D) LiOH(aq) +HNO,(aq)LiNOs(aq) + HO0) E) 2Al(s)+3H SO4(aq)Al:(SO) (aq)+3H:(g) The common constituent in all acid solutions is A) CI B) OH C) H D) H2SO E) H2 23. 24. Which of these properties is/are characteristic(s) of gases? A) High compressibility B) Relatively large distances between molecules C) Formation of homogeneous mixtures regardless of the nature of gases D) A and B. E) A, B, and C. 25. Heat is a measure of thermal energy transferred between two bodies at different temperature. a measure of the change in temperature. a measure of temperature. a measure of thermal energy. A) B) C) D) 26. Thermal energy is A) B) C) D) the energy stored within the structural units of chemical substances. the energy associated with the random motion of atoms and molecules. solar energy, i.e. energy that comes from the sun. energy available by virtue of an object\'s position. 27. An exothermic reaction causes the surroundings to A) decrease its temperature. B) warm up. C) expand. D) become acidic. E) release CO2. Solution 22) in combustion reaction, a compound reacts with O2 to form CO2 and H2O This is correct for option B Answer: B 23) All acid have H+ Answer: C 24) All 3 statements are correct Gas occupy the volume of container. So, there is large distance between molecules Due to this it can be compressed a lot Also gas and gas mixture will always be homogeneous Answer: E Only 1 question at a time please .

1. INITIALS: 22. Which of the following represents a combustion reaction? A) 2Na(s) + 2H2O(l) ?
2NaOH(aq) + H2(g) B) 2011(g) + 702(g) ? 4CO2(g) + 6H2O(l) C) N2(g) +3H(g) 2NH3(g) D)
LiOH(aq) +HNO,(aq)LiNOs(aq) + HO0) E) 2Al(s)+3H SO4(aq)Al:(SO) (aq)+3H:(g) The
common constituent in all acid solutions is A) CI B) OH C) H D) H2SO E) H2 23. 24. Which of
these properties is/are characteristic(s) of gases? A) High compressibility B) Relatively large
distances between molecules C) Formation of homogeneous mixtures regardless of the nature of
gases D) A and B. E) A, B, and C. 25. Heat is a measure of thermal energy transferred between
two bodies at different temperature. a measure of the change in temperature. a measure of
temperature. a measure of thermal energy. A) B) C) D) 26. Thermal energy is A) B) C) D) the
energy stored within the structural units of chemical substances. the energy associated with the
random motion of atoms and molecules. solar energy, i.e. energy that comes from the sun.
energy available by virtue of an object's position. 27. An exothermic reaction causes the
surroundings to A) decrease its temperature. B) warm up. C) expand. D) become acidic. E)
release CO2.
Solution
22)
in combustion reaction, a compound reacts with O2 to form CO2 and H2O
This is correct for option B
Answer: B
23)
All acid have H+
Answer: C
24)
All 3 statements are correct
Gas occupy the volume of container. So, there is large distance between molecules

2. Due to this it can be compressed a lot
Also gas and gas mixture will always be homogeneous
Answer: E
Only 1 question at a time please