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Worksheets

Science quiz

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Following gas is called as greenhouse gas

a)

CFC

b)

Carbondioxide

c)

Sulferdioxide

d)

Nitrogen dioxide

e)

Oxygen

2.

Example for nonmetal which is good conductor of heat and electricity

a)

Sulfer

b)

Carbon

c)

Graphite

d)

Nitrogen

e)

Hydrogen

3.

Genotypic ratio of Mendel monohybrid cross is

a)

1:2

b)

3:1

c)

1:2:1

d)

1:1:2

4.

Magnesium ribbon is rubbed before burning because it has coating of

a)

Magnesium carbonate

b)

Magnesium oxide

c)

Magnesium sulphate

d)

Magnesium chloride

5.

Oxidation is process which involves addition of

a)

Oxygen

b)

Nitrogen

c)

Carbon

d)

Hydrogen

6.

The gas which is filled in plux bag containg food made from oil or fat

a)

Oxygen

b)

Chlorine

c)

Nitrogen

d)

Hydrogen

7.

Products formed when iron reacts with dilute hydrochloric acid are

a)

Iron chloride and hydrogen

b)

Iron chloride and water

c)

Iron oxide and hydrogen

d)

Iron oxide and water

8.

Which one of the following salt does not contain water of crystalization

a)

Copper sulphate solution

b)

Baking soda

c)

Washing soda

d)

Gypsum

9.

The acid present in lemon is

a)

Acetic acid

b)

Citric acid

c)

Tartaric acid

d)

Oxalic acid

10.

Brine is an

a)

Aqueous solution of sodium hydroxide

b)

Aqueous solution of sodium carbonate

c)

Aqueous solution of sodium chloride

d)

Aqueous solution of sodium bicarbonate

11.

Na2CO3 10H2O is

a)

Baking soda

b)

Washing soda

c)

Bleaching powder

d)

Plaster of paris

12.

Sodium carbonate is a basic salt because it is salt of

a)

Strong acid and strong base

b)

Weak acid and weak base

c)

Strong acid and weak base

d)

Weak acid and strong base

13.

Lime water reacts with chlorine to give

a)

Bleaching powder

b)

Baking powder

c)

Plaster of paris

d)

Washing powder

14.

Leaves of neetle sting is a natural source of

a)

Formic acid

b)

Citric acid

c)

Lactic acid

d)

Ethanoic acid

15.

Which property of metals used for making bells and strings of musical instruments

a)

Sonorus

b)

Malleability

c)

Ductility

d)

Conductivity

16.

Reaction of iron with copper sulphate solution is the example of

a)

Combination reaction

b)

Decomposition reaction

c)

Displacement reaction

d)

Neutralization reaction

17.

Non metal form covalent bond with chloride because

a)

They give electron to chlorine

b)

They share electron with chlorine

c)

They forms ions with chlorine

d)

They cannot share electron with chlorine

18.

The highly reactive metalslike sodium and potassium are extracted by

a)

Electrolysis of their Molton chloride

b)

Electrolysis of their Molton oxode

c)

Reduction by carbon

d)

Reduction by alluminium

19.

Which of the following nonmetal is lustrous

a)

Sulfer

b)

Oxygen

c)

Nitrogen

d)

Iodin

20.

Example of an amphoteric oxide is

a)

Na2O

b)

K2O

c)

Al2O3

d)

MgO

21.

The process in which one is heated in absence of oxygen is called

a)

Roasting

b)

Reduction

c)

Calcination

d)

Smelting

22.

Galvanisation is a method of protecting iron from rusting by coating with thin layer of

a)

Galium

b)

Aluminum

c)

Zinc

d)

Silver

23.

Copper object loose their shine and form green coating is

a)

Copper oxide

b)

Copper hydroxide

c)

Copper carbonate

d)

Coppersulphide

24.

Arrangement of elements in modern periodic table is based on their

a)

Increasing atomic massing period

b)

Increasing atomic mass in groups

c)

Increasing atomic number along period

d)

Increasing atomic number down group

25.

Number of group and periods in modern periodic table are

a)

7 and 18

b)

4 and 18

c)

18 and 7

d)

14 and 7

26.

Number of isomers of pentane are

a)

2

b)

3

c)

4

d)

6

27.

Which of following under goes addition reaction

a)

Methane

b)

Propane

c)

Ethane

d)

Ethene

28.

On oxidation of ethanol in presence of KMnO4 gives

a)

Acetic acid

b)

Water

c)

Ethanal

d)

Acetone

29.

Functional group prest in butanoic acid id

a)

OH

b)

CHO

c)

COOH

d)

Cl

30.

To convert banzene in to cyclohexane number of hydrogen are required are

a)

5

b)

6

c)

4

d)

3

31.

First member of alkyne homologous series is

a)

Propyne

b)

Ethyne

c)

Methane

d)

Ethene

32.

The mode of nutrition found in fungi is

a)

Parasitic nutrition

b)

Holozoic nutrition

c)

Autotrophic nutrition

d)

Saprotrophic nutrition

33.

Roots of plants absorb water from soil by the process of

a)

Diffusion

b)

Transpiration

c)

Osmosis

d)

Translocation

34.

The site of photosynthesis in cells of leaf is

a)

Mitochondria

b)

Chloroplast

c)

Cytoplasm

d)

Protoplasm

35.

In amoeba food is digested in

a)

Mitochondria

b)

Pseudopodia

c)

Food vacuole

d)

Chloroplast

36.

Which region of alimentary canal absobs digested food

a)

Stomach

b)

Small intestine

c)

Large intestine

d)

Liver

37.

The contraction and expansion movement of walls of food pipe is called

a)

Translocation

b)

Respiration

c)

Peristaltic movement

d)

Digestion

38.

When a few drops of iodin solution is added to rice solution turns black-blue in colour this indicates presence of

a)

Fat

b)

Protein

c)

Starch

d)

Glucose

39.

Products of anaerobic respiration are

a)

Lactic acid +energy

b)

CO2 +water +energy

c)

Ethanol +CO2 +energy

d)

Pyruvate

40.

Respiratory pigment in human being is

a)

Carotene

b)

Chlorophyll

c)

Haemoglobin

d)

Mitochondria

41.

Which plant tissue transport water and mineral from roots to leat

a)

Xylum

b)

Phloem

c)

Parenchyma

d)

Collenchyma

42.

Circulatory fluid in human being other than blood is

a)

Platelets

b)

RBC

c)

Lymph

d)

Food

43.

During favorable condition amoeba reproduce by

a)

Multiple fission

b)

Binary fission

c)

Budding

d)

Fragmentation

44.

Bryophyllum can be prapogated vegetatively by

a)

Stem

b)

Leaf

c)

Root

d)

Flower

45.

Flower of the hibiscus plant is

a)

Bisexual

b)

Unisexual

c)

Neuter

d)

Non of above

46.

The process of release of eggs from ovary is called as

a)

Menstruation

b)

Reproduction

c)

Insemination

d)

Ovulation

47.

The embryo in human gets nutrition from mother blood with help of special tissue

a)

Villi

b)

Uterus

c)

Placenta

d)

Womb

48.

Number of pairs of sex chromosomes in human being is

a)

2

b)

3

c)

1

d)

4

49.

Organs which have same basic structure but different function are called

a)

Vestigial organ

b)

Analogous orgon

c)

Homologous orgon

d)

Non of above

50.

The process by which new species develop from existing species is called as

a)

Evolution

b)

Natural selection

c)

Artificial selection

d)

Speciation