JEE Main Test 126

Result

JEE Main Test 126

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Weekly Quiz Competition

Question 1
4 / -1

If f(x) and g(x) are twice differentiable function on (0, 3) satisfying f ''(x) = g''(x), f '(1) =4, g'(1) = 6, f(2) = 3, g(2) = 9, then f(1) - g(1) is equal to

A
4

B
-4

C
0

D
-2

Solution
Question 2
4 / -1

A

B

C

D

Solution
Question 3
4 / -1

Sulphide ores are common for metals

A
Ag, Cu and Pb

B
Ag, Cu and Sn

C
Ag, Mg and Pb

D
Al, Cu and Pb
Solution
1. Argentite (Ag₂S)
2. Galena (PbS)
3. Chalcocite (Cu₂S)
4. Copper pyrite (chalco pyrite) [CuFeS₂]
5. Cassiiterite (SnO₂)
6. Dolomite (CaMg(CO₃)₂)
7. Bauxite (Al(OH)₃)
∴ Sulphide containing ores are Ag, Cu, Pb
Question 4
4 / -1

In borax bead test, the coloured ions give characteristic coloured beads due to the formation of

A
metal borates

B
metal metaborates

C
metal phosphates

D
metal tetraborates

Solution

In the borax bead test, B₂O₃ or borax is heated in a Bunsen burner flame with metal oxides in a loop of platinum wire. The mixture fuses to give a glass like metaborate bead.
Question 5
4 / -1

A

B

C

D

Solution
Question 6
4 / -1

A
vasodilator

B
analgesics

C
antacid

D
antiseptic

Solution

Histammine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter and vasodilator.
Question 7
4 / -1

Which of the following represents soap ?

A
C₁₇H₃₅COOK

B
C₁₇H₃₅COOH

C
C₁₅H₃₁COOH

D
(C₁₇H₃₅COO)₂Ca

Solution

Soaps are water soluble sodium or potassium salts of fatty acids. Soaps are made from fats or oils, or their fatty acids by treating them chemically with a strong alkali having molecular formula.

C₁₇H₃₅COOK (potassium stearate).
Question 8
4 / -1

A
3

B
4

C
5

D
6

Solution
Question 9
4 / -1

A

B

C

D

Solution
Question 10
4 / -1

Area (in sq units ) bounded by the curves y = e^x, y = e^-x and the straight linex = 1 is

A

B

C

D

Solution