Daily Quiz master cadre chemistry

Daily Quiz

Q1. Which of the following pears have same number of atoms
(a) 16 gram of O2(g) and 4 gram of H2 (b) 16 gram of O2 and 44 gram of CO2
(c) 28 gram of N2 and 32 gram of O2
(d) 12 gram of C(s) and and 23g of Na(s)

Q2. One mole of calcium phosphide on reaction with excess of water gives
(a) 1 mol of phosphine
(b) two moles of phosphoric acid
(c) 2 moles of phosphine
(d) one mole of phosphorus pentoxide

Q3. Hydrocarbon is composed of 75% carbon the empirical formula of the compound is
(a)CH2
(b)CH3
(c)CH4
(d) C2H7

Q4. What is molality of pure water
(a)1
(b)18
(c)55.5
(d) none of these

Q5. Molarity of 98% of H2 SO4 (d=1.8g/mL) bhai wait is
(a)6M
(b)18M
(c)10M
(d)4M

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