NCST Mock Test Season II Chemistry
NCST Mock Test Season II Chemistry
1] When manganese dioxide is heated with Al the reaction that takes place is
A. Addition reactionB. Redox reaction
C. Precipitation reaction
D. Cannot be determined
2] Choose the correct option.
A. K has more reactivity than NaB. H has less reactivity than Au
C. Zn has more reactivity than Na
D. Hg is less reactive than Ag
3] Substitution reaction is possible in
A. AlkeneB. Alkane
C. Both alkene and alkane
D. Only in alkyne
4] Which of the following can be oxidized easily?
A. CO2B. SO3
C. NO
D. H2SO4
5] Sooty deposit is found after burning of
A. ButeneB. Hexene
C. Methane
D. Octane
6] Select the odd one out.
A. LiB. Cs
C. Ca
D. Si
7] HCl has higher acidic strength than acetic acid, because
A. Both releases same number of H+ ions in the aqueous solution.B. HCI dissociates completely in aqueous medium.
C. Acetic acid dissociates completely in aqueous medium.
D. It does not depends on the type of acid at all.
8] Which one of the following has the highest priority in nomenclature of organic compound?
A. AldehydeB. Carboxylic acid
C. Ketone
D. Ester
9] Chlorine can form maximum
A. 4 bondsB. 5 bonds
C. 6 bonds
D. 7 bonds
10] Element with highest electronegative value is
A. LiB. Na
C. F
D. Ar
11] Which of the following metal is found in liquid state at normal condition?
A. CsB. Ir
C. Hg
D. Os
12] Borax contains
A. NaB. Mg
C. Ca
D. K
13] Which of the following is called brine?
A. NaOHB. NaCl
C. Na2CO3
D. NaHCO3
14] Oxidation number of chromium in CrO5 is
A. 6B. 8
C. 10
D. 5
15] During the process of dilution, number of moles of acid in solution ____.
A. IncreasesB. Decreases
C. Remains constant
D. Cannot be determined
16] Choose the incorrect option.
A. HCl in aqueous medium gives a hydronium ionB. H2SO4 can give double H+ ion than H2PO4
C. H3BO3 gives H+ ion from its own molecule
D. BF3 is an electron deficient species
17] Hydrogen gas is produced in which of the following reaction?
A. Calcium phosphate + Sodium ChlorideB. Sulphuric acid + Sodium chloride
C. Hydrochloric acid + Potassium metal
D. Chlorine gas + Sodium metal
18] When Zn granules are added to dilute H2SO4, the gas released from reaction is collected and put in a container with 6 moles of nitrogen gas. Then, the maximum number of moles of ammonia which can be produced is
A. 6B. 8
C. 10
D. 12
19] A curdy white coloured compound of silver is subjected to sunlight. The colour of compound turns white to grey. This phenomenon happens due to
A. Decomposition of compoundB. Addition of oxygen
C. Deposition of Cu
D. Removal of water from compound
20] In combination reaction
A. More than two products are obtainedB. More than three products are obtained
C. Only one product is obtained
D. Cannot be determined about product
21] Chemical reaction does not involve
A. Changing of atom of one element to another elementB. Changing of one compond to another compound with same constituent elements
C. Conversion of species to different physical state
D. Conversion of species to same physical state
22] In the formation of ammonia in Haber's process
A. 2 moles of hydrogen gas required to produce 3 moles ammoniaB. 3 moles of nitrogen gas required to produce 2 moles ammonia
C. 6 moles of hydrogen gas required to produce 4 moles ammonia
D. 7 moles of nitrogen gas required to produce 7 moles ammonia
23] The total number of carbon present in principle chain of the given molecule is
A. 8
B. 10
C. 12
D. 14
24] The total number of hydrogen atoms present in
A. 14
B. 12
C. 10
D. 8
25] How many numbers of electron(s) is/are present in Li+2 ion?
A. 1B. More than 2
C. 3
D. Electrons are not present in ion
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