Dakshana Mock Test Season XI Solutions
Dakshana Mock Test Season XI Solutions
1] An element reacts with oxygen to form oxide AO. Find the formula of chloride of A.
Answer: ACl2
2] Choose the correct order of atomic radius.
Answer: N > O
3] How many structural isomers are possible for hexane?
Answer: 5
4] How many carbon does 'third member of homologous series of alkyne' have?
Answer: 4
5] Carbon usually forms _____.
Answer: Covalent bond
6] Which of the following can accept as well as lose electrons easily?
Answer: H
7] Give the name of the following functional group: COH
Answer: Aldehyde
8] The reactivity of Mg, Al, Fe and Zn decreases in the order
Answer: Mg > Al > Zn > Fe
9] Water H2O(l) cannot react with
Answer: Au
10] Which of the following metal oxide can react with acid and base both?
Answer: Al2O3
11] 100mL of a solution of NaOH is found to be completely neutralized by 80mL of a given solution of HCl. If we take 200mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralize it will be
Answer: 160mL
12] When washing soda is heated, it gives out ____ water molecules.
Answer: 10
13] Bleaching powder is used for bleaching cotton and linen in the textile industry, for bleaching wood pulp in paper factories and for bleaching washed clothes in laundry. Bleaching powder is produced by the action of a gas on dry slaked lime.
Choose the gas from the following option.
Answer: Chlorine gas
14] Which of the following have highest acidic strength?
Answer: H2SO4
15] pH of the solution is calculated using formula, pH = -log[H+], where [H+] refers concentration of H+ ion. Find the pH of 10-8 M HCl solution.
Answer: Less than 7
16] In a beaker if, there is 10 ml of 2M NaOH solution and 0.5M HCl is continuously added for a period of time. Then, pH of the solution in beaker will
Answer: Start decreasing
17] Which of the following acid contains 3 replaceable hydrogen ion?
Answer: H3PO4
18] Name the reducing agent in the following reaction.
3MnO2 + 4Al → 3Mn + 2Al2O3
Answer: Al
19] Which of the following have 3 replaceable hydroxide ion?
Answer: Al(OH)3
20] An amount of 0.3 mole of SrCl2 is mixed with 0.2 mole of K3PO4. The maximum mole of KCl which may form is
Answer: 0.6
21] When certain amount of octane is burnt completely, 44g of CO2 is formed. What is the mass of H2O formed simultaneously?
Answer: 20.25
22] When limestone is heated it evolves CO2 gas and compound A. When A reacts with water it forms an aqueous solution. Which of the following will react with the given aqueous solution?
Answer: Zn(OH)2
23] Solutions of Barium Chloride and Sodium Sulphate in water react to give insoluble white colored precipitate and the solution of sodium chloride. 3 mole of anion present in this precipitate can combine with 'x' mole of Aluminum ion. Find the value of 'x'.
Answer: 2
24] 6 moles each of nitrogen gas and hydrogen gas react to form ammonia in a closed vessel. Calculate the total number of moles of species at the end of reaction in that vessel.
Answer: 8
25] Which one can act as only oxidizing agent?
Answer: H2SO4
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