Ca-2B-6O-11-Na-2CO-3 -A-B-CaCO-3- -A-CO-2 - -B-Na-2CO-3-Solution- -B- Conc- HCI - NaCI-Acid- H-2O- -C-D-Acid -C- -D-CuSO-4 Blue coloured-E-compound-compound -E- is -Cu2O-Cu-BO2-2-CuS-CuSO3-

468

You visited us 468 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Borax

Ca_2B_6O_11+N...

Question

$C a_{2} B_{6} O_{11} + N a_{2} C O_{3} F u s e d - -- \to (A) + (B) + C a C O_{3} (A) + C O_{2} \to (B) + N a_{2} C O_{3} Solution (B) + C o n c . H C I \to N a C I + A c i d ↓ H_{2} O (C) S t r o n g l y - ---- \to h e a t e d (D) Acid (C) (D) + C u S O_{4} H e a t e d - ---- \to i n f l a m e Blue coloured (E) compound compound (E) is -$

Cu2O

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

CuS

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

CuSO3

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

Cu(BO2)2

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

Open in App

Solution

The correct option is D
Cu(BO2)2

Compound (A) is - $N a B O_{2}$
Compound (B) is - $N a_{2} B_{4} O_{7}$
Compound (C) is - $H_{3} B O_{3}$
Compound (D) is - $B_{2} O_{3}$
Compound (E) is - $C u (B O_{2})_{2}$

Suggest Corrections

Similar questions

Some properties of Sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reactions (i) to (v). Some properties may be repeated :

A. Acid B. Dehydrating agent

C. Non-volatile acid D. Oxidizing agent

(i) $C_{12} H_{22} O_{11} + n H_{2} S O_{4} \to 12 C + 11 H_{2} O + n H_{2} S O_{4}$

(ii) $S + 2 H_{2} S O_{4} \to 3 S O_{2} + 2 H_{2} O$

(iii) $N a C I + H_{2} S O_{4} \to N a H S O_{4} + H C I$

(iv) $C u O + H_{2} S O_{4} \to C u S O_{4} + H_{2} O$

(v) $N a_{2} C O_{3} + H_{2} S O_{4} \to N a_{2} S O_{4} + H_{2} O + C O_{2}$

A white precipitate can be obtained by adding dilute sulphuric acid to :

(a) $C u S O_{4}$ Solution (b) NaCI Solution (c) $B a C l_{2}$ Solution (d) $N a_{2} S O_{4}$ Solution

Q. Name the type of respiration in which the end products are:
(a) C₂H₅OH and CO₂
(b) CO₂ and H₂O
(c) Lactic acid
Give one example of each case where such a respiration can occur.

$C a_{2} B_{6} O_{11} + N a_{2} C O_{3} F u s e d - -- \to (A) + (B) + C a C O_{3} (A) + C O_{2} \to (B) + N a_{2} C O_{3} Solution (B) + C o n c . H C I \to N a C I + A c i d ↓ H_{2} O (C) S t r o n g l y - ---- \to h e a t e d (D) Acid (C) (D) + C u S O_{4} H e a t e d - ---- \to i n f l a m e Blue coloured (E) compound compound (E) is -$

Q. Match the following:

Column A Types of chemical reaction	Column B Chemical equations
(a) Combination reaction	(i) $C a C O_{3} A \to C a O + C O_{2}$
(b) Decomposition reaction	(ii) $2 H_{2} O E l e c t r i c i t y - ----- \to 2 H_{2} + O_{2}$
(c) Displacement reaction	(iii) $C a O + C O_{2} \to C a C O_{3}$
(d) Analysis reaction	(iv) $F e (s) + C u S O_{4} (a q .) \to F e S O_{4} (a q) + C u (s)$

Join BYJU'S Learning Program

Ca2B6O11+Na2CO3Fused−−−→(A)+(B)+CaCO3(A)+CO2→(B)+Na2CO3Solution(B)+Conc.HCI→NaCI+Acid ↓H2O(C)Strongly−−−−−→heated (D) Acid(C)(D)+CuSO4Heated−−−−−→inflameBlue coloured(E) compoundcompound (E) is -

The correct option is D Cu(BO2)2 Compound (A) is - NaBO2 Compound (B) is - Na2B4O7 Compound (C) is - H3BO3 Compound (D) is - B2O3 Compound (E) is - Cu(BO2)2

The correct option is D
Cu(BO2)2

Compound (A) is - $N a B O_{2}$
Compound (B) is - $N a_{2} B_{4} O_{7}$
Compound (C) is - $H_{3} B O_{3}$
Compound (D) is - $B_{2} O_{3}$
Compound (E) is - $C u (B O_{2})_{2}$