Artificial radioactivity was discovered by_____

(a)

Becquerel

(b)

Irene Curie

(c)

Roentgen

(d)

Niels Bohr

Proton - Proton chain reaction is an example of__________

(a)

Nuclear fission

(b)

\(\alpha\) - decay

(c)

Nuclear fusion

(d)

\(\beta\) - decay

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

The basis of modern periodic law is__________.

(a)

atomic number

(b)

atomic mass

(c)

isotopic mass

(d)

number of neutrons

Neon shows zero electron affinity due to _____.

(a)

stable arrangement of neutrons

(b)

stable configuration of electrons

(c)

reduced size

(d)

increased density

Which of the following is hygroscopic in nature?

(a)

ferric chloride

(b)

copper sulphate pentahydrate

(c)

silica gel

(d)

none of the above

A single displacement reaction is represented by X_(s) + 2HCl_(aq) → XCl_2(aq) + H_2(g). Which of the following(s) could be X. (i) Zn (ii) Ag (iii) Cu (iv) Mg. Choose the best pair.

(a)

i and ii

(b)

ii and iii

(c)

iii and iv

(d)

i and iv

The secondary suffix used in IUPAC nomenclature of an aldehyde is ____

(a)

- ol

(b)

– oic acid

(c)

– al

(d)

- one

The endarch condition is the characteristic feature of

(a)

root

(b)

stem

(c)

leaves

(d)

flower

The body of leech has

(a)

23 segments

(b)

33 segments

(c)

38 segments

(d)

30 segments

A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

(a)

O group

(b)

AB group

(c)

A and B group

(d)

All blood group

Which nervous band connects the two cerebral hemispheres of brain?

(a)

thalamus

(b)

hypothalamus

(c)

corpus callosum

(d)

pons

Identify the exocrine gland

(a)

Pituitary gland

(b)

Adrenal gland

(c)

Salivary gland

(d)

Thyroid gland

Male gametes in angiosperms are formed by the division of ___________

(a)

Generative cell

(b)

Vegetative cell

(c)

Microspore mother cell

(d)

Microspore

The centromere is found at the centre of the ________________ chromosome

(a)

Telocentric

(b)

Metacentric

(c)

Sub-metacentric

(d)

Acrocentric

Paleontologists deal with

(a)

Embryological evidences

(b)

Fossil evidences

(c)

Vestigial organ evidences

(d)

All the above

We can cut the DNA with the help of

(a)

scissors

(b)

restriction endonucleases

(c)

knife

(d)

RNAase

Metastasis is associated with

(a)

Malignant tumour

(b)

Benign tumour

(c)

Both (a) and (b)

(d)

Crown gall tumour

Common energy source in village is

(a)

electricity

(b)

coal

(c)

biogas

(d)

wood and animal dung

Which is used to build scripts?

(a)

Script area

(b)

Block palette

(c)

stage

(d)

sprite