DEMOEXAM | ScoreExams

Question 1 of 10

The least stable free radical is

A

{tex} CH_{3}CH_{2}{/tex}

B

{tex}CH_{3}CH_{2}CH_{2}{/tex}

C

{tex} (CH_{3})_{2}CH{/tex}

D

{tex} CH_{3}{/tex}

Question 2 of 10

A

B

C

D

E

Question 3 of 10

For the data

the Karl Pearson coefficient is

A63 / (√ 94 × √ 66)

B63

C63 / √ 94

D63 / √ 66

E1 / [√(94 × 66)]

Question 4 of 10

then the matrix A is equal to

A

B

C

D

E

Question 5 of 10

A2 tan x + c

B√cot x + c

C2 √tan x + c

Dtan ² x + c

Ecot x + c

Question 6 of 10

Propyne is treated with sodamide and the product is treated with methyl iodide to get

AButylamine

B2 - butene

C2 - butyne

DPropyl methyl amine

Question 7 of 10

The correct IUPAC name of the acid

AZ-3-ethyl-4-methyl hex-3-en-1-oic acid

BZ-3-ethyl-4-methyl hexanoic acid

CZ-3, 4-diethylpent-3-en-1-oic acid

DE-3-ethyl-4-methylhex-3-en-1-oic acid

Question 8 of 10

Which of the following statement is true?

A{tex}HClO_4{/tex} is aweaker acid than {tex}HClO_3{/tex}

B{tex}HNO_3{/tex} is a stronger acid than {tex}HNO_2{/tex}

C{tex}H_3 PO_3{/tex} is a stronger acid than {tex}H_2 SO_3{/tex}

DIn aqueous medium HF is a stronger acid than HCl

Question 9 of 10

No of {tex}H_2O{/tex} molecules in a drop of water weighing 0.05g is:

A{tex}1.5 \times 10^{23}{/tex}

B{tex}1.672 \times 10^{21}{/tex}

C{tex}1.5 \times 10^{20}{/tex}

D{tex}6.022 \times 10^{22}{/tex}

Question 10 of 10

On a humid day in summer, the mole fraction of gaseous H₂O (water vapour ) in the air at 25° C can be as high as 0.0287. Assuming the total pressure of 0.977 atm, what is the partial pressure of dry air ?

A94.9 atm

B0.949atm

C949atm

D0.648atm

E1.248atm