The specific heat capacity of water is

(a)

4200 Jkg^-1K^-1

(b)

420 Jg^-1K^-1

(c)

0.42 Jg^-1K^-1

(d)

4.2 Jkg^-1K^-1

Electric field lines________ from positive charge and__________ in negative charge.

(a)

start; start

(b)

end; start

(c)

start; end

(d)

end; end

Number of valence electrons in carbon is

(a)

2

(b)

3

(c)

4

(d)

5

The hydrated salt of copper sulphate has______colour

(a)

Red

(b)

White

(c)

Blue

(d)

Pink

Unstriated muscles are found in

(a)

blood vessels

(b)

gastrointestinal tract

(c)

urinary bladder

(d)

all of these

Electrons move from__________ potential to __________ potential

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higher, lower

A device for producing electric current is_________.

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electric generator

During pairing of chromosomes in meiosis, the _______ chromosomes come to lie side by side.

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homologous

The speed of rotation of an electric motor can be increased by decreasing the area of the coil

(a) True

(b) False

Parenchyma is a simple tissue

(a) True

(b) False

How much heat energy is required to change 2 kg of ice at 0ºC into water at 20ºC? (Specific latent heat of fusion of water = 3,34,000J/kg, Specific heat capacity of water = 4200JKg^-1K^-1).

What is the effective resistance across the terminals a and b of the arrangement of resistors?

Define magnetic flux density.

Draw and label the diagram of an AC generator.

State modern periodic law.

Name the connective tissue with a fluid matrix.

Complete the missing terms in the following table:

Process	Phase I	Phase II
Sublimation		Vapour
Solidification		Solid
	Solid	Liquid
Freezing	Liquid
Condensation		Liquid

Complete the following table referring the modern periodic table:

Period number	Total no of elements	Elements		Total no of elements in
		From	To	s-block	p-block	d-block	f-block
1
2
3
4
5
6
7

Mark the correct choice as:
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If assertion is false but reason is true.
Assertion: Maximum sunlight reaches earth’s surface during the afternoon time.
Reason: Heat from the sun reaches earth’s surface by radiation.

Statement: Elements in a group generally possess similar properties but elements along a period have different properties.
Reason: The difference in electronic configuration makes the element differ in their chemical properties along a period.
a) Statement is true and reason explains the statement.
b) Statement is false but the reason is correct.

Name any two appliances which work under the principle of heating effect of current.

State Faraday’s laws of electromagnetic induction.

What are the limitations of Mendeleev's periodic table?

Find the odd one out.
(i) H₂, Cl₂, NaCl, O₂, N₂
(ii) H₂O₂, MnO₄^–, LiAlH₄, Cr₂O₇^2–

Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
(i) Find out the acid A and acid B.
(ii) Which acid is called the King of Chemicals?

Why is meiosis called reductional division and mitosis as equational division?

Name the parts of a computer

Identify the following parts:
1. It conducts food from pharynx to stomach by peristalsis-
2. Finger-like projections which enhances the absorbing capacity of small intestine-
3. The bunch of capillaries inside the Bowman’s capsule-
4. Thin muscular tubes which carry urine from kidney to urinary bladder-
5. Small sac-like muscular structures that encloses testes-

Match the parts of the given figure with the correct option.

1	2	3	4	5
a.Fallopian tube	Oviduct	Uterus	Cervix	Vagina
b.Oviduct	Cervix	Vagina	Ovary	Vas deferens
c.Ovary	Oviduct	Uterus	Vagina	Cervix
d.Fallopian tube	Ovary	Cervix	Uterus	Vagina

1. What are the changes of state in water? Explain.

2. Draw a circuit with a 2\(\Omega\) and 5\(\Omega\) resistors in series. Connect another 3\(\Omega\) resistor parallel to the above connection.

1. Explain the principle, construction and working of a dc motor.

2. State any five features of modern periodic table.

1. List down the differences between Ionic and Covalent compounds.

2. Plaster of Paris should be stored in a moisture proof container. why?

1. Write about the elements of Xylem.

2. Explain the structure of kidney and the steps involved in the formation of urine