The unit of ‘g’ is m s^-2. It can be also expressed as ______.

(a)

cms^-1

(b)

Nkg^-1

(c)

Nm²kg^-1

(d)

cm²s^-2

Gravitational, magnetic and electro magnetic forces are example for _______ force.

(a)

Contact

(b)

Non - contact

(c)

Balanced

(d)

Unbalanced

Which of the following lens would you prefer to use while reading small letters found in a dictionary?

(a)

A convex lens of focal length 5 cm

(b)

A concave lens of focal length 5 cm

(c)

A convex lens of focal length 10 cm

(d)

A concave lens of focal length 10 cm

Temperature is the average ______ of the molecules of a substance

(a)

difference in K.E and P.E

(b)

sum of P.E and K.E

(c)

difference in T.E and P.E

(d)

difference in K.E and T.E

Kilowatt hour is the unit of

(a)

resistivity

(b)

conductivity

(c)

electrical energy

(d)

electrical power

If a sound wave travels with a frequency of 1.25 x 10⁴ Hz at 344 ms^-1, the wavelength will be 

(a)

27.52 m

(b)

275.2 m

(c)

0.02752 m

(d)

2.752 m

_____________ aprons are used to protect us from gamma radiations

(a)

Lead oxide

(b)

Iron

(c)

Lead

(d)

Aluminium

Which of the following represents 1 amu?

(a)

Mass of a C – 12 atom

(b)

Mass of a hydrogen atom

(c)

1/12^th of the mass of a C – 12 atom

(d)

Mass of O – 16 atom

_____ is a relative periodic property.

(a)

atomic radii

(b)

ionic radii

(c)

electron affinity

(d)

electronegativity

______ is an important metal to form amalgam.

(a)

Ag

(b)

Hg

(c)

Mg

(d)

Al

A 25% alcohol solution means 

(a)

25 ml alcohol in 100 ml of water

(b)

25 ml alcohol in 25 ml of water

(c)

25 ml alcohol in 75 ml of water

(d)

75 ml alcohol in 25 ml of water

A reaction between carbon and oxygen is represented by C_(s) + O_2(g) → CO_2(g) + Heat. In which of the type(s), the above reaction can be classified?
(i) Combination Reaction
(ii) Combustion Reaction
(iii) Decomposition Reaction
(iv) Irreversible Reaction

(a)

i and ii

(b)

i and iv

(c)

i, ii and iii

(d)

i, ii and iv

Rectified spirit is an aqueous solution which contains about _______ of ethanol

(a)

95.5 %

(b)

75.5 %

(c)

55.5 %

(d)

45.5 %

Oxygen is produced at what point during photosynthesis ?

(a)

when ATP is converted to ADP

(b)

when CO₂ is fixed

(c)

when H₂O is splitted

(d)

All of these

The body of leech has

(a)

23 segments

(b)

33 segments

(c)

38 segments

(d)

30 segments

‘Heart to Heart’ is called

(a)

SA node

(b)

AV node

(c)

Purkinje fibres

(d)

Bundle of His

Vomiting centre is located in

(a)

medulla oblongata

(b)

stomach

(c)

cerebrum

(d)

hypothalamus

Identify the exocrine gland

(a)

Pituitary gland

(b)

Adrenal gland

(c)

Salivary gland

(d)

Thyroid gland

______ is a powerful inhibitor of lateral bud growth in Tomato.

(a)

Auxin

(b)

Cytokinin

(c)

ABA

(d)

Ethylene

______ is the hormone secreted by Thymus.

(a)

Thymosin

(b)

Estrogen

(c)

Testosterone

(d)

Progesterone

Estrogen is secreted by

(a)

Anterior pituitary

(b)

Primary follicle

(c)

Graffian follicle

(d)

Graffian follicle

_______from anterior pituitary stimulates milk secretion

(a)

Oxytocin

(b)

Prolactin

(c)

Progestrone

(d)

Oestrogen

________is a disc shaped structure.

(a)

Uterus

(b)

Placenta

(c)

Ovary

(d)

Sperm

The loss of one or more chromosome in a ploidy is called_____________.

(a)

Tetraploidy

(b)

Aneuploidy

(c)

Euploidy

(d)

Polyploidy

______is not a nitrogenous base.

(a)

Adenine

(b)

Thymine

(c)

Leucine

(d)

Cytosine

The best way of direct dating fossils of recent origin is by

(a)

Radio-carbon method

(b)

Uranium lead method

(c)

Potassium-argon method

(d)

Both (a) and (c)

Biogenesis was speculated by _________.

(a)

Oparin

(b)

Louis Pasteur

(c)

Haldane

(d)

All the above

The process of formation of fossils in the rocks is called ________.

(a)

calcification

(b)

crystallization

(c)

petrification

(d)

fossilization

DNA fingerprinting is based on the principle of identifying _______ sequences of DNA

(a)

single stranded

(b)

mutated

(c)

polymorphic

(d)

repititive

Pusa sawani is a insect resistant variety of __________

(a)

cowpea

(b)

flat bean

(c)

lady's finger

(d)

brassica

Metastasis is associated with

(a)

Malignant tumour

(b)

Benign tumour

(c)

Both (a) and (b)

(d)

Crown gall tumour

______________ is a symptom of CHD.

(a)

Glycosuria

(b)

Ischemia

(c)

Hyperglycemia

(d)

Polyphagia

Common energy source in village is

(a)

electricity

(b)

coal

(c)

biogas

(d)

wood and animal dung

The Chipko movement originated in_________

(a)

Uttar pradesh

(b)

Uttarakhand

(c)

Arunachal Pradesh

(d)

Madhya Pradesh

In Scratch, the characters are known as_________

(a)

Sprite

(b)

Stage

(c)

Element

(d)

Script