MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Chemical Reactions

Borax is trea...

Question

Borax is treated with hot concentrated $H C l$ to get $N a C l$ and compound $^{'} A^{'}$ . The oxidation state of Boron in compound 'A' is:

A

+ 1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

+ 2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

+ 3

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

- 3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $+ 3$
Borax on treatment with acid gives orthoboric acid $H_{3} B O_{3}$ in which oxidation state of Boron is $+ 3$ .

Suggest Corrections

thumbs-up

1

Similar questions

Q. A red coloured mixed oxide (X) on treatment with concentrate

H N O_{3}

gives a compound (Y). (Y) with HCl, produces a chloride compound (Z) which can also be produced by treating (X) with concentrate HCl. Compounds (X), (Y) and (Z) will be :

Q. 4-nitrotoluene is treated with bromine to get compound '

P

' which is reduced with

S n

H C l

to get compound '

Q

Q

' is diazotized and the product is treated with phosphinic acid to get compound '

R

R

' is oxidized with alkaline solution

K M n O_{4}

to get the final product. Identify the final product.

C H_{3} C H_{2} N H_{2}

is treated with excess of

C O C l_{2}

to get the compound [A].

C O C l_{2}

is then treated with excess of

C H_{3} C H_{2} N H_{2}

to get the compound [B]. [A] and [B] respectively are :

Q. A compound ‘A’ when treated with

H N O_{3}

(in presence of

H_{2} S O_{4}

) gives compound ‘ B’, which is then reduced with

S n

H C l

to aniline? The compound ‘A’ is

Q. An aliphatic unsaturated hydrocarbon

(A)

when treated with

H g S O_{4} / H_{2} S O_{4}

yields a compound

(B)

having molecular formula

C_{3} H_{6} O

(B)

on oxidation with concentrated

H N O_{3}

gives two compounds

(C)

(D)

(C)

when treated with

P {C l}_{5}

(E)

(E)

when reacts with ethanol gives a sweet smelling liquid

(F)

(F)

is also formed when

(C)

reacts with ethanol in the presence of concentrated

H_{2} S O_{4}

.
(i) Identify the compound

A, B, C, D, E

F

.
(ii) Give the chemical equation for the reaction of

(C)

with chlorine in the presence of red phosphorous and name the reaction.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Acid Base Reactions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Chemical Reactions

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon