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Weightlessness is a condition when your body is in free fall and the acceleration is downward at gravity. This condition can be defined by the term zero gravity. So weightlessness occurs when there is zero support of force on our body.

Correct answer is

B. Tamasic diet

Comparison between Natural and Synthetic fibres.

Industrial usages of fabric:

a. automobiles, 

b. conveyor belts, 

c. footwear, 

d. laundry bags

Yes.
When a body is at highest point of motion, its velocity is zero but acceleration is equal to acceleration due to gravity.

a = \(\frac{v^2}{r}=\frac{40×40}{160} \)= ms^-2.

1. Parabola

2. The time taken by the projectile to cover the horizontal range is called the time of flight.

Time of flight of projectile is decided by usinθ. The time of flight can be found using the formula s = ut + 1/2 at²

Taking vertical displacement s = 0, a = -g and initial vertical velocity = usinθ, we get 

0 = usinθt – 1/2gt²

1/2 gt² = usinθt

t = \(\frac{2usinθ}{g}\).

3. Time of ascent = time of descent

4. Time of descent > time of ascent

These two vectors will be antiparallel. Hence θ = 180°.

1. Electrostatic force
2. Gravitational force

No. If velocity is constant, speed also will be constant.

Work, current.  are the scalar quantity.

Crepe weave is used in making lingerie, blouses, dresses and crepe bandages.

The cyclist bends inwards to provide required centripetal force.

The effect of air resistance is to increase time of flight and decrease horizontal range.

At the highest point velocity is horizontal and acceleration is vertical. So angle is 90°.

The colours used in animal prints are those found on the animal’s body, which generally are shades of brown, blacks and whites.

The yarn resist dyed fabrics are Patola (Single Ikat and Double Ikat).

Correct answer is (iii) speed

B. All the elements of food that are needed to keep ones health.

Balance diet means All the elements of food that are needed to keep ones health.

Horizontal component.

(c) Velocity is tangential, acceleration is radial.

(e) \(\sqrt{gr}\)

Correct answer is

D. All the above

1. Parabola

2. Yes, highest point

3. Energy with a projectile is projected:

(i) Kinetic energy E_k = 1/2mv²

Velocity at the highest point = Vcosθ

∴ K.E. at highest point = 1/2m(Vcosθ)²

= 1/2 mv²cos²θ

K.E. = E_k cos²θ

(ii) Potential energy at highest point,

P.E. = mgh

= mg \(\frac{v^2sin^2θ}{2g}\) = 1/2mv²sin²θ

P.E. = E_k sin²θ.

Speed: Computer is a very fast device. Some calculation that would have taken hours and days to complete otherwise, can be completed in a few seconds using the computer. It can carry out instructions at a very high speed obediently, uncritically and without exhibiting any emotions.

Accuracy: The degree o accuracy o computer is consistently very high and every calculation is performed with the same accuracy. The accuracy level of a particular computer is determined on the basis instructions and the design of computer.

Storage: The computers have lot of storage devices which can store a tremendous amount o data with appropriate format. Data storage is essential function of the computer. Secondly storage devices like compact disk can store a large amount of data permanently

Reliability: Computer provides very high speed accompanied by an equally high level or reliability. Thus, computers never make mistakes on their own accord.

No feeling : It does not have feelings or emotion, taste, knowledge and experience thus, it does not get tired even after long hours of work.

Phulkari literally means flower craft.

Phulkari is considered as an important part of trousseau in Punjab.

Fibers based on their length are classified as staple and filaments.

a. Staple fibers are the short length fibers whose length runs in centimeters and inches. They are the natural fibers – cotton , flax and wool are examples of it. 

b. Filament fibers are long length fibers whose length runs in meters and kilometers. 

For example: all synthetic fibers like nylon, rayon, polyester and the only natural filament fiber is silk.

The most common motifs used in ajrakh of gujrat and rajasthan are geometric motifs known as champakali, raiya, kharek, nipad , grinari etc.

[D] Herring bone stitch

The main stitch used in Chikankari is Herring bone stitch.

Chikankari is white work embroidery practiced in Lucknow, Uttar Pradesh. It is known as white embroidery because it is done on fine white cotton fabric with untwisted white cotton or silk thread.

Correct answer is

D. All of these

Chamba rumal has two different kinds:

(A) Pahari style of painting which depicts the miniature style.

(B) Folk style in which the women embroider their cholis and scarves using their own patterns and designs.

Correct option: a. Hydrogen peroxide

The variation of basic chain stitch is open chain and twisted chain stitch.

Men’s shirts, women's tops, curtains, bed spreads, cushion and sofa covers.

Jacquard weave:

a. It is a decorative weave. 

b. It has combination of plain, twill and satin weave. 

c. It has intricate patterns. There is no limitation of repeating design. 

d. It requires skilled labour. 

e. It is expensive.

Correct option: a. Jamnagar, Bhavnagar

Fabrics are generally dyed in a solid color, prior to printing; the design is applied by screen or roller with a chemical This reducing agent will destroy the color in the printed portion and white background will appear in the printed area. 

Discharge Prints are not widely used due to following reasons: 

•Production is more costly than direct print because fabric is to be dyed prior to printing.

•Very careful and precise process control is required.

(d) Information

Knowledge is an organized body of Information.

The two types of screen printing techniques are flat screen and rotary screen printing.

Correct option: a. Half tone designs are not possible

Duplex Prints

The discharge Style: in the early part of the nineteenth century it was discovered , that it was possible by chemical means to bleach out or ‘discharge’ a pattern from an already piece-dyed cloth . This discharging process enabled fairly intricate and fine patterns to be printed, giving the effect of resist dyeing.

The direct style: Until the advent of chemically produced dyestuffs there was very little direct printing. The exceptions were almost all pigment colours. These colours, unlike dyestuffs which stain the fibre of the cloth, merely coat the outside of each warp and weft thread, which comes in contact while printing.

Correct option: a. strong alkali solution

Correct option: a. Stock dyeing

Correct option: b. Block printing

Geometric prints comprises of designs made with circles, triangles, square, spirals and stars.

(1) Block Printing:- Block printing is the oldest form of printing where-in a wooden block with a raised pattern on the surface is dipped into the printing colorant and then pressed down on to fabric to achieve design on the fabric. In Block printing , the pattern is generated by repeating the process of block application on the fabric. For a design of four colours, four separate blocks are developed. Due to manual process, this printing is time consuming and provide flexibility of changing the pattern placement.

(2) Screen Printing:- This style of printing is popular because of wider scope for achieving desired results. In this technique, the printing paste passes through a fine fabric stretched on a wooden or metal frame. The design is created in reverse on the screen by blocking areas of the screen with light sensitive chemical. The screen is then placed over the fabric and the printing paste is forced through the open areas of the screen using a flexible synthetic rubber or steel blade. It is done either with flat of cylindrical screens made of mild threads, nylon, polyester, or metal. Based on the type of the screen used, it is known as ‘Flat Screen Printing’ or ‘ Rotary Screen Printing’.

A popular bandhani textile produced in Gujarat, a traditional odhani for Hindu brides, which is nowadays available as a sari worn on auspicious occasions is called as Gharcholu . 

While doing Phulkari one motif is left unembroidered or is embroidered in an offbeat colour. This motif is called ‘nazarbuti’ which is considered to ward off the evil eye.