Which of the following correctly represent 360 g of water
(i) 2 moles of H₂O
(ii) 20 moles of water
(iii) 6.023 x 10²³ molecules of water
(iv) 1.2046 x 10²⁴ molecules of water

(a)

(i)

(b)

(i) and (iv)

(c)

(ii) and (iii)

(d)

(ii) and (iv)

The total number of atoms represented by the compound CuSO₄. 5H₂O is

(a)

27

(b)

21

(c)

5

(d)

8

The gram molecular mass of CO₂ is

(a)

16g

(b)

18g

(c)

44g

(d)

17g

The first period of the modern periodic table has ________ elements.

(a)

1

(b)

2

(c)

3

(d)

8

Electronegativity values are based on ______________

(a)

bond energy

(b)

electron affinity

(c)

ionisation energy

(d)

all the above

Blister copper contains _________

(a)

50% pure copper

(b)

99% pure copper and 1% impurities

(c)

98% pure copper and 2% impurities

(d)

75% pure copper and 25% impurities

Solubility of a solute is governed by

(a)

nature of solute and solvent

(b)

temperature

(c)

pressure

(d)

all the above

Non-aqueous solvent is ____________

(a)

benzene

(b)

ether

(c)

CS₂

(d)

All the above

Which of the following is a dehydrating agent (absorbs moisture)

(a)

sodium hydroxide

(b)

anhydrous calcium chloride

(c)

sugar

(d)

None of these

Which among the following chemical reaction is an example of combination reaction?
(i) H_2(g)+ CI_2(g) ⟶ 2HCI_(g)
(ii) AnOH_(aq) + HCl_(aq) ⟶ NaCl_(aq) + H2O₍₁₎
(iii)2Mg(S)+ O_2(g) ⟶ 2MgO_(S)
(iv) Zn(S)+ 2HCI_(aq) ⟶ ZnCl₂ + H_2(g)

(a)

only (i)

(b)

both (i) and (iii)

(c)

only (iii)

(d)

both (i) and (ii)

Pb(NO₃)₂ + 2KI ⟶ Pbl₂ + 2KNO₃ is a ______________ reaction

(a)

neutralization

(b)

Precipitation

(c)

decomposition

(d)

Combustion

Copper displaces - metal from its solution.

(a)

Zn

(b)

AI

(c)

Ag

(d)

all the above

Rectified spirit contains

(a)

95.5% of ethanol and 4.5% of water

(b)

100% pure alcohol

(c)

4.5% of ethanol and 95.5% of water

(d)

50% of ethanal and 50% of water

The organic acid present in Vinegar is ___________ acid.

(a)

methanoic

(b)

ethanoic

(c)

Propanoic

(d)

Butanoic

The opening of pulmonary arch into right ventricle of rabbit is guarded by_________ semilunar valves.

(a)

2

(b)

4

(c)

3

(d)

1

Two chambered heart is seen in__________

(a)

fish

(b)

amphibian

(c)

reptiles

(d)

mammals

The other name of red blood corpuscles is _________

(a)

erythrocytes

(b)

leucocytes

(c)

granulocytes

(d)

agranulocytes

_____ is an inflammation of the meninges.

(a)

Meningitis

(b)

Myelin sheath

(c)

Piameter

(d)

Arachnoid membrane

______ is a growth inhibitor.

(a)

Auxin

(b)

GA

(c)

Cytokinin

(d)

Ethylene

_____ helps in the contraction of the smooth muscles of uterus at the time of child birth.

(a)

Oxytocin

(b)

Prolactin

(c)

FSH

(d)

GTH

The other name of Antidiuretic hormone is

(a)

vasopressin

(b)

oxytocin

(c)

prolactin

(d)

growth hormone

_______takes place after implantation.

(a)

Cleavage

(b)

Fertilization

(c)

Gastrulation

(d)

Organogenesis

An oocyte is alive for about________ after it is released from the follicle

(a)

24 hours

(b)

12 hours

(c)

15 hours

(d)

20 hours

The ejection of milk is stimulated by posterior pituitary hormone called_____

(a)

Prolactin

(b)

Insulin

(c)

Oxytocin

(d)

Estrogen

Franklin and Wilkin were awarded nobel prize for_______.

(a)

studying DNA replication

(b)

studying about RNA

(c)

X - ray diffraction studies of DNA.

(d)

isolating DNA

________ is not an example of vestigial organ.

(a)

Coccyx

(b)

Appendix

(c)

Thick hair

(d)

Nictitating membrane

Radioactive Carbon (C¹⁴) dating method was discovered by_________.

(a)

W.F.Libby

(b)

Niels Bohr

(c)

Issac Newton

(d)

William Harvey

The International rice research institute is located at___________.

(a)

New Delhi

(b)

Mexico

(c)

Phillipines

(d)

China

DNA finger printing was developed by

(a)

Dr. Ian Wilmut

(b)

Alec Jeffrey

(c)

Lilly

(d)

Dr. Norman

____________ is not a method of treatment for cancer.

(a)

Surgery

(b)

Immunotherapy

(c)

Vasectomy

(d)

Radiation therapy

Forest conservation Act was passed in__________

(a)

1952

(b)

1958

(c)

1978

(d)

1980

__________is not obtained from petroleum.

(a)

Biogas

(b)

Diesel

(c)

Gasoline

(d)

LPG

Notes can be collected, edited and printed using______

(a)

Paint

(b)

Scratch

(c)

Notepad

(d)

LINUX

Which button is presses to run the script?

(a)

Green flag

(b)

Red flag

(c)

Blue flag

(d)

Yellow flag