Dakshana Mock Test Season XI

Dakshana Mock Test Season XI

1] An element reacts with oxygen to form oxide AO. Find the formula of chloride of A.

i. ACl
ii. ACl2
iii. ACl3
iv. A3Cl4

2] Choose the correct order of atomic radius.

i. O > N
ii. N > O
iii. Cl > Br
iv. Na > Cs

3] How many structural isomers are possible for hexane?

i. 4
ii. 5
iii. 6
iv. 7

4] How many carbon does 'third member of homologous series of alkyne' have?

i. 2
ii. 3
iii. 4
iv. 30

5] Carbon usually forms _____.

i. Ionic bond
ii. Covalent bond
iii. It does not form any bond
iv. None of these

6] Which of the following can accept as well as lose electrons easily?

i. Na
ii. F
iii. Ar
iv. H

7] Give the name of the following functional group: COH

i. Carboxylic acid
ii. Aldehyde
iii. Alcohol
iv. Ketone

8] The reactivity of Mg, Al, Fe and Zn decreases in the order

i. Mg > Al > Zn > Fe
ii. Al > Zn > Fe > Mg
iii. Mg > Zn > Fe > Al
iv. Mg > Fe > Al > Zn

9] Water H2O(l) cannot react with

i. Na
ii. Al
iii. Au
iv. Cs

10] Which of the following metal oxide can react with acid and base both?

i. Na2O
ii. Cs2O
iii. CaO
iv. 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

i. 40mL
ii. 80mL
iii. 120mL
iv. 160mL

12] When washing soda is heated, it gives out ____ water molecules.

i. 6
ii. 8
iii. 10
iv. 12

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.

i. Hydrogen sulphide gas
ii. Chlorine gas
iii. Phosphine gas
iv. Fluorine gas

14] Which of the following have highest acidic strength?

i. CH3COOH
ii. H2SO4
iii. HF
iv. H2S

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.

i. Less than 7
ii. More than 7
iii. More than 8
iv. Equals to 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

i. Start increasing
ii. Start decreasing
iii. First increase and then decrease
iv. First decrease and then increase

17] Which of the following acid contains 3 replaceable hydrogen ion?

i. H3PO3
ii. H3BO3
iii. H3PO4
iv. H3PO2

18] Name the reducing agent in the following reaction.

3MnO2 + 4Al → 3Mn + 2Al2O3

i. MnO2
ii. Al
iii. O2
iv. None of these

19] Which of the following have 3 replaceable hydroxide ion?

i. NaOH
ii. Ca(OH)2
iii. H3BO3
iv. 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

i. 0.6
ii. 0.5
iii. 0.3
iv. 0.1

21] When certain amount of octane is burnt completely, 44g of CO2 is formed. What is the mass of H2O formed simultaneously?

i. 18.5
ii. 20.25
iii. 26.25
iv. 34

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?

i. NaOH
ii. KOH
iii. Zn(OH)2
iv. CsOH

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'.

i. 1
ii. 2
iii. 3
iv. 4

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.

i. 10
ii. 8
iii. 5
iv. 6

25] Which one can act as only oxidizing agent?

i. Cl2
ii. O2
iii. H2SO4
iv. H3PO3







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