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Chemistry 2nd Half Test

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.

Among the elements A, B, C and D having atomic numbers 9, 10, 11 and 12 respectively.

The correct order of ionization energies is

a)

A > C > B > D

b)

B > A > D > C      

c)

B > D > C > A

d)

D > C > B > A

2.

Isomerism exhibited by CH3COOH and HCOOCH3 is

a)

Positional

b)

Chain

c)

Geometrical

d)

Functional group

3.

Identify C in the following series

a)

Br–CH2–CH2–CN

b)

CN–CH2–CH2–CN

c)

Br–CH=CH–CN

d)

CH3–CH2–CN

4.

The addition of HCN to carbonyl compounds is an example of

a)

Electrophilic addition

b)

Nucleophilic substitution

c)

Nucleophilic addition

d)

Electrophilic substitution

5.

Which intermediate compound is formed in the acid catalyzed dehydration of n-propyl alcohol

a)

CH3 - CH2 - CH2-

b)

CH3 - CH2 - CH2+

c)

CH3 - CH+ - CH3

d)

CH3 - CH- - CH3

6.

Which of the following does not give iodoform test

a)

CH3–CH2–OH

b)

CH3–CH2–CH2–CH2–OH

c)

(CH3)2–CH–OH

d)

CH3COCH3

7.

Alcohols react with sodium metal to give

a)

N2 gas

b)

Cl2 gas

c)

H2O vapours

d)

H2 gas

8.

Oxidation of acetone in the presence of K2Cr2O7 / H2SO4 produced

a)

CH3COOH, HCOOH

b)

Only CH3COOH

c)

Only HCOOH

d)

CH3COOK, HCOOK

9.

Ketones on complete reduction always give

a)

Aldehyde

b)

Alkanes

c)

Primary Alcohol

d)

Secondary alcohol

10.

Hydrolysis of ethane nitrile with acidic solution gives

a)

Formic acid

b)

Acetic acid

c)

Methyl cyanide

d)

Acetamide

11.

The flavour of amyl acetate is like

a)

Orange

b)

Apricot

c)

Pine apple

d)

Banana

12.

Which of the following is a poly protic acid

a)

CH3COOH

b)

C6H4(OH)COOH

c)

(COOH)2

d)

C6H5COOH

13.

Which one is more acidic

a)

CH3COOH

b)

ClCH2COOH

c)

Cl2CHCOOH

d)

Cl2CHCH2COOH

14.

Ammonium acetate on strong heating gives

a)

Urea

b)

Formamide

c)

Acetic acid

d)

Acetamide

15.

The correct order of atomic radii is

a)

F < K < Na < Li

b)

Li < Na < K < F

c)

F < Li < Na < K

d)

Na < K < Li < F

16.

In a period melting point of elements

a)

Increases

b)

Decreases

c)

Remains Constant

d)

1st increases then decreases

17.

Which one is amphoteric oxide

a)

MgO

b)

SrO

c)

BeO

d)

CaO

18.

Which statement is not correct about CO2

a)

In CO2, C is sp hybridized

b)

In CO2, C has 2𝝅  bonds

c)

CO2 has linear structure

d)

Dipole moment of CO2 is non zero

19.

Phenol reacts with HNO3 at 25°C the products is

a)

2,4,6-tinitrophenol

b)

O-Nitrophenol and P-Nitrophenol

c)

2,4-Dinitrophenol

d)

O-Nitrophenol

20.

Which of the following test is used for both ketone and aldehyde?

a)

Sodium nitroprusside test

b)

Tollen’s test

c)

Fehling’s solution test

d)

2, 4-DNPH test

21.

Enzyme used for the treatment of blood cancer in children is

a)

Urease

b)

Zymase

c)

Lactic dehydrogenase

d)

L-asparaginase

22.

The proteins which on hydrolysis yield only amino acids or their derivatives, are called

a)

Derived protein

b)

Simple protein

c)

Compound protein

d)

Conjugated protein

23.

Glycogen is stored in

a)

Kidney

b)

Stomach

c)

Liver

d)

Intestine

24.

In the formation of chloroform during chlorination of methane, the correct

propagation step is

a)
b)
c)
d)
25.

The smallest in size is

a)

Al3+

b)

P3-

c)

F-

d)

O-2

26.

Which of the following group shows maximum electron affinity value

a)

IV-A

b)

VII-A

c)

VI-A

d)

VIII-A

27.

An element having more number of unpaired electrons but has lower melting Point

a)

Fe

b)

Mn

c)

Cr

d)

CO

28.

Hybridization of carbon atoms  in CO and CO2 is

a)

sp and  sp2

b)

sp and sp  

c)

sp2  and    sp2

d)

sp2   and  sp

29.

Propane nitrile on basic hydrolysis yields

a)

Propanoic acid

b)

Butyric acid

c)

Ethanoic acid

d)

None of these

30.

Ethanoic acid on treatment with SOCl2 form acetyl chloride. This reaction is

a)

Nucleophilic addition

b)

Electrophilic addition

c)

Nucleophilic substitution

d)

Acid – base reaction

31.

During denaturation of protein , which structure is not changed

a)

Primary

b)

Tertiary

c)

Secondary

d)

Quaternary

32.

2-butenal on reduction with aqueous sodium borohydride yields

a)

2-buten-1-ol

b)

2-butanol

c)

butanal

d)

1-butanol

33.

All of the following alcohols will give iodoform test except one

a)

Ethanol

b)

2-butanol

c)

Sec-butyl alcohol

d)

Isobutyl alcohol

34.

The specie which is not an electrophile 

a)

BF3

b)

N+H4

c)

C+H3

d)

N+O2

35.

Weakest carboxylic acid is

a)

Formic acid

b)

Choloro acetic acid acid

c)

Acetic acid

d)

Propanoic acid

36.

Alcohol that will not undergo oxidation

a)

Neopentyl alcohol

b)

2-methyl-2-propanol

c)

Isobutyl alcohol

d)

Both “A” and “B”

37.

2-butene reacts with hot alkaline KMnO4 solution to form

a)

Butane-2, 3-diol

b)

Butane-1, 2-diol

c)

Butane-1, 4-diol

d)

None of these

38.

Hybridization of each carbon in polythene is

a)

sp

b)

sp2

c)

sp3

d)

dsp2

39.

Which of the following oxides in group IIA elements is/are insoluble

a)

MgO

b)

SrO

c)

CaO

d)

BaO

40.

Which of the following shows normal electronic configuration

a)

Cr

b)

Ag

c)

Cu

d)

Hg

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