Question

3.
4.
According to Ohm's law, if voltage increases and resistance stays the same,
A) resistance decreases
B) current increases
C) current remains the same
D) current decreases.
When the gases sulphur dioxide and hydrogen sulphide mix in the presence of water, the
reaction is SO, + 2H,S → 2H,0 + 3S. Here hydrogen sulphide is acting as
A) An oxidizing agent
B) A reducing agent
C) A dehydrating agent
D) A catalyst
Real images formed by single convex lenses are always ....
A) on the same side of the lens as the object B) inverted
C) erect
D) smaller than the object
When two individuals are similar in external appearance but different in their genetic makeup.
They are called as?
A) Allele
B) Dominant C) Homozygous D) Heterozygous
The reaction between sodium hydroxide with zinc gives product
A) Zinc hydroxide
B) Sodium Zincate
C) Zinc oxide
D) Reaction is not possible of a base and metal
The part of the eyes refracts light entering the eye from external objects?
A) Lens
B) Cornea
C) Iris
D) Pupil
The diagram below represents structures found in a human female.
What structure is shown in the diagram and what is its use?
A) Copper -T (IUD) - prevents implantation
B) Copper-T(IUD) - prevents ovulation
C) Diaphram - Prevents sperm entry in oviduct
D) Tubectomy- Prevents fertilization
What happens when metallic oxide reacts with an acid?
A) Salt and water are formed
B) Oxygen and water are formed
C) Carbon dioxide gas and water are formed
D) Hydrogen gas is formed along with water​

Answer 1

Answer:

(B) current increase

(B) Reducing agent

(C) Erect

(D) Heterozygous

(B) Na2Zn

(A) lens

diagram not given

(A) salt and water

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