Free Printable 1Oth Sci Zebar CH 1,2,3,5,6,12,15

Worksheets

1Oth Sci Zebar CH 1,2,3,5,6,12,15

Total questions: 29

Worksheet time: 27mins

Name

Class

Date

. The electronic configuration of three elements X, Y and Z are as follows:

X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula

NONE

What happens to the electropositive character of elements on moving from left to right in a periodic table?

Increase

decrease

first increase and then decrease

first decrease than increase

The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in

4th group

10th group

14th group

none

In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

2H₂ (l) + O₂ (l) > 2H₂O(g)

2H₂ (g) + O₂ (l) > 2H₂O (l)

2H₂ (g) + O₂ (g) > 2H₂O (l)

2H₂ (g) +O₂ (g) > 2H₂O (g)

Which among the following statement(s) is (are) true?

Exposure of silver chloride to sunlight for a long duration turns grey due to

(i) the formation of silver by decomposition of silver chloride

(ii) sublimation of silver chloride

(iii decomposition of chlorine gas from silver chloride

(iv) oxidation of silver chloride

(i) only

(i) and (iii)

(ii) and (iii)

(iv) only

CaOCl2 will liberate Cl₂ gas in presence of

(i) CO₂

(ii) HCl

(iii) CO

(iv) NO

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

Which of the following statements is true for acids?

Bitter and change red litmus to blue

Sour and change red litmus to blue

Sour and change blue litmus to red

Bitter and change blue litmus to red

Lime water reacts with chlorine to form

CaCl₂

CaOCl₂

Ca(ClO₃)₂

CaO₂Cl₂

NaOH is obtained by electrolysis of

Aq. solution of NaCl

Aq. Na₂CO₃

Aq. NaHCO₃

Molten NaCl

10.

Which of the following metals liberate hydrogen with 5% $HNO_3$ ?
(i) Cu
(ii) Zn
(iii) Mn
(iv) Mg

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

11.

Which of the following statements is not true about blood plasma?

It is a faint yellow in colour

It contains corpuscles

It cannot coagulate

It is the fluid part of blood

12.

In humans, right auricle receives ______ blood from______

Oxygenated, aorta

Deoxygenated, vena cava

Oxygenated, vena cava

Deoxygenated, aorta

13.

What prevent the backflow of blood in heart.

Septa

Valves

Arteries

Veins

14.

Oxygenated blood is pumped from heart to rest of the body via:

Aorta

Pulmonary

Pulmonary vein

Vena cava

15.

Blood pressure is measured by an instrument known as:

ECG

Stemoscope

Sphygmomanometer

EEG

16.

Translocation utilizes energy (ATP) to transfer ______ into phloem tissue.

Sugar

Fat

Potassium

Lipid

17.

Which of the following statements is correct about an aqueous solution of an acid and of a base?

(i) Higher the pH, stronger the acid

(ii) Higher the pH, weaker the acid

(in) Lower the pH, stronger the base

(iv) Lower the pH, weaker the base

(i) and (iii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

18.

A wire of length l, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to,

\frac{ρ}{2}

2 ρ

4 ρ

19.

The temperature of a conductor is increased. The graph best showing the variation of its resistance is

20.

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is

$2\times10^{3\ }$ joule

$2\times10^5$ joule

$2\times10^{4\ }$ joule

$2\times10^2$ joule

21.

A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is

2 A

4 A

8 A

16 A

22.

The resistance whose V - I graph is given below is

$\frac{5}{3}\Omega$

$\frac{3}{5}\Omega$

$\frac{5}{2}\Omega$

$\frac{2}{5}\Omega$

23.

To get 2 $\Omega$ resistance using only 6 $\Omega$ resistors, the number of them required is

24.

Two wires of same length and area made of two materials of resistivity $\rho_1$ and $\rho_2$ are connected in series to a source of potential V. The equivalent resistivity for the same area is

$\rho_1+\rho_2$

$\frac{\rho_1\rho_2}{\rho_1+\rho_2}$

$\frac{\left(\rho_1+\rho_2\right)}{\rho_1\rho_2}$

$\left(\frac{\left|\rho_1+\rho_2\right|}{2}\right)$

25.

Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

current

voltage

resistance

None of these

26.

We should reduce the use of plastic bags, bottles , etc because

They are not durables

They are non biodegradable

They are made of toxic materials

They react with atmospheric gases

27.

Calculate the current flows through the $10\ \Omega$ resistor in the following circuit.

1.2 A

0.6 A

0.2 A

2.0 A

28.

Which of the following may be a conclusion of the excessive exposure of humans to sun's ultra violet rays?

(i) peptic ulcers

(II) eye disease like cataract

(III) damage to lungs

(iV) skin cancer

(i) and (IV)

(II) ,( III) and (IV)

(II) and (IV)

Only (IV)

29.

Which among the following statements is incorrect from the point of view of the plants

They convert solar energy into mechanical energy

They prepare their food from organic compounds

They are also called producers

They are initial source of energy in food chain

100 %

1Oth Sci Zebar CH 1,2,3,5,6,12,15

Total questions: 29

Worksheet time: 27mins

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